You're not so much trusting the dop, so much as you're going to take a chance that it fears you enough that it's being honest. Since if it IS telling the truth and willing to work for you, he would come in pretty handy.

Still, you're going to be careful as you can about this.

"Okay, first of all, are you absolutely SURE this plan is going convince Green Eye to meet with me?" you ask.
"Yes, I am. If he thinks something is wrong, but fixable he'll more often than not take a personal approach to it even if it might risk his life, just like when he first spoke with you. If I know him, he'll probably want to appease you so he can give himself more time to re-think a new strategy of how to deal with you if he believes you can walk around in the day time." The dop says.

You can't really tell due to its nearly featureless expression, but it sounds confident in its words. You suppose that will have to do.

"Alright then, we'll try the plan." You say.
"Y…you will? Oh thank the gods! I swear I will be loyal to you!" the dop exclaims.
"We'll see, but first I need to prepare you a bit." You say and move towards it.
"Prepare?"
"Yeah, just relax a bit, don't move and… brace yourself!"

You suddenly lunge on the dop who is taken by surprise by your speed. You bite the dop in the arm and drink a little of its blood. It actually tastes pretty terrible and you nearly spit it out.

In the meantime the dop is making a horrible screaming noise and doesn't stop until you smack it upside the head.

"Stop that, it's annoying." You say and release it.
"Y…you bit me!" the dop says rubbing its arm.
"Sure did. Call it an extra precaution in case you get the bright idea to try to betray me. I can always sense where you are now. So if any of this goes south, I'm going to know where to find YOU immediately."

The doppelganger might have those empty white orbs for eyes, but you can still see the fear in them. Honestly, while you will be able to sense it if it's close by, you aren't going to be able to instantly track it from anywhere. Still, it doesn't know that.

"I wasn't going to betray you." The dop whines.
"Well, now I know you won't. Now you stay here, I'm going to go get one of the villagers so you can blend in again. I'll drain them and you can walk out like nothing happened. The body can be disposed of later." you answer.
"Wait which one?"
"What difference does it make? I dunno the tavern keeper's wife I guess. Might as well considering I already killed her husband. Plus it's an easy enough task even for you and you'll hear all the village gossip at lot easier, not that it matters I suppose."
"Mm, okay. I don't have to worry about you suddenly picking on me to bite now and I prefer female forms anyway, it's always easier when the gender matches."

You pause for a moment.

"Wait…you're female?" you ask.
"Well we doppelgangers are pretty flexible about it all for obvious reasons, but yes, I personally identify as female. Can't you tell?" she says.
"Um, no not really. I mean you're just a smooth gray nearly featureless being. It's not like I can see tits or anything. I mean…I can't even see a hole down there…or anywhere for that matter; then again I haven't really been exploring. I guess if you were a guy it would have been more obvious I suppose."
"Oh you solids with your constant exposed reproductive organs. We doppelgangers transcend such concerns since we only display them when necessary such as for sex or expelling waste. Until that time they remain hidden and protected."
"Okay, well however works…don't really want to know, but if that's the case how the fuck was I supposed to be able to tell that you're female or not?"
"By my eyes of course! Those of my kind that identify as female tend to change our eye color to white while those that identify as males tend to change them to black."
"What color are they normally?"
"Oh gray."
"Great. Very illuminating. Next time I run into one of you doppys, I'll try to remember all that."
"Erm, could you please not call me a doppy? It is considered offensive to my…"

You glare at the doppelganger as your patience wears thin.

"Um…nevermind. Just happy to serve and being included, sir." She says submissively.

You leave the house and find that a minor crowd has gathered from a safe distance. They're probably wondering what exactly happened, time to make up a story.

"Is that…thing gone m'lord?" someone asks.
"Yes, of course it is. Didn't you hear its death scream? I interrogated it first though. Apparently those bandits I thought I took care of have regrouped and will be trying to attack again. However, we know the truth now and can prepare. I'm going to track them down and finish them off for good, however I'm still going to bless some of you and when I do, you will be charged with helping the defense of this village. I trust you all will be up for the challenge should it come to that." You say.
"Of course m'lord! We all will!"
"Then we will start tomorrow night, for now though I wish to spend time with you. The rest of you go home and worry no longer about any of this." You say and point to the tavern owner's wife. She goes over to you immediately.

As the crowd disperses and obeys your command, you head into your home with your victim.

You don't bother with the foreplay and get straight to the feeding. You've done this with her several times already, but this time will be different for her. As usual she puts up no resistance and even as you're obviously killing her she still whispers "I love you" in your ear and holds you tightly.

You finish her off and drop her body to the floor. Meanwhile the dop was watching the shadows. You look at her and from her body language she cringes a bit.

"Geez… you really are ruthless. I mean I've seen you on occasion drink people, but…never quite like that. She said she loved you and you just…look I just want to remind you, I am definitely NOT going to betray you."
"Glad to hear it, now stop wasting time and take her form or whatever it is you do."

The dop wastes no time and soon there is a "new" tavern keeper's wife…actually you find out her name was Kayla. The doppelganger knew her better than you actually did, despite you feeding on her on a regular basis.

After "Kayla" leaves to get more acquainted with her new role, you look around to make sure you can dispose of the real one safely. You aren't sure why you're bothering being so secretive since the villagers would probably be fine with a doppelganger if you told them to be fine with it.

However, you do think it's probably a good idea to slowly introduce such things to them. While they may accept you as a master, they may be less willing to accept some other non-human lurking about as well.

At least not until you make some of them non-human.

The next night you start again with what you originally planned. This time you pick a married couple at random and decide to see how it goes. You give them both some of your blood which causes them to gag a bit and then generally feel "weird."

The pair of them eventually stagger back home, and you tell Kayla to keep an eye on them both since you won't be able to observe them during the day.

A couple days and nights pass and you repeat the process with them and just when you're starting to get frustrated, they start to show a change. The pair of them become more fawning than usual towards you and you don't even have to do anything. They're also paler and beginning to move in a less normal fashion. It's more of a loping gait. Their appetite becomes a lot less normal as well.

You think you've finally changed them into ghouls. You're glad it didn't take as long as Isabella once suggested it would if you attempted it.

However, you soon discover all her warnings were correct. First off, they ARE very annoying with how much they're underfoot all the time. Still, they are very obedient and they soon finish digging out the area meant to be your new resting place under the house. It's crude, but you figure it can be worked on continually. For now though it's functional enough that you don't need to sleep in a hole in the ground in the forest nearby.

Keeping them subdued when you're asleep is another matter however. While you attempt to tell them to stand guard over you, they're little like children in that they get bored and have short attention spans.

While they haven't actually attacked anyone yet, they're acting aggressive enough that it won't be long. This naturally causes some of the other villagers to be wary and now that's potentially messing up your relationship with them.

To counter act this, you give a few intimidating speeches, re-hyponotize a few of the key villagers again and have the two ghouls whipped before the mob and scold them for their behavior. The pathetic creatures soon learn that they aren't going to be chewing on their neighbors anytime soon. Still, it does make other villagers less eager to want to become ghouls now, though you're sort of wondering if it's worth it anyway.

While you're trying to keep a precarious balance of humans and non-humans together through your powers and plain old fear, Kayla reminds you that it will soon be time for her to meet with Green Eye's people and start part one of that plan. You originally thought you might send one of the ghouls with her, but that would probably just confuse them, or they'll fuck up the plan and they might even eat Kayla. So she's going alone. You're still fairly concerned about this, but this is what you've decided on, so that's what you're going to do.

You don't even go to sleep that day; you stay awake mostly pacing in your underground sleeping area. You send Stinky and Fatty (Your new names for your ghouls since you never bothered to learn their real names) to go fetch you a "drink" so you can keep your strength up. You also tell them to keep an eye out for Kayla.

At any moment you fully expect to hear the sounds of an attack above you. You aren't going to be able to help, so you hope Stinky and Fatty are up to the task.

However, the pair of them eventually come back with Kayla who is back in her human form.

"Here she is master!" Stinky says excitedly.
"Did we do good?" Fatty adds.
"Yeah, now get the hell out of here. Go dig up one of the corpses in the forest and reward yourself or something."

You hardly need to tell them twice and they both leave you alone.

"Well?" you ask.
"Well, I'm back and it's done. I made enough trouble that Green Eye will be willing to speak with you tonight. I didn't really want to be at Green Eye's any longer than I had to anyway, let alone directly confront him. Fairly certain that gem eye of his sees through disguises. In fact, I highly suggest that you not talk to him and just attack as soon as you see him, lest you fall under his command." Kayla says.
"You're joking right? I'm a fucking vampire. I am the one who commands."
"Yeah, I know you've got powers of your own, but it's that gem eye. It's magic. How the hell do you think he got that motley bunch to work for him?"
"You seem immune considering you're selling him out."
"Well I imagine that might be a combination of being a doppelganger, along with not being in his presence for an extended period of time. Whenever I was though, I felt the urge to serve him. I mean think about it, he managed to convince YOU not to wipe out his group the first time around. How the hell did he do that? I like to think I've gotten to know you well enough that you're not really a man that takes chances on potential future threats so you sparing him and everyone else seems a bit out of character."
"I spared and took a chance on you."
"True I suppose, but still…I dunno I'm just saying you probably shouldn't speak with him just to be safe."
"Your concern is touching. I'm guessing it's dark about now, I'll be heading out with the ghouls then."
"Okay, well did you need me for anything else then?"
"Not right now and assuming you haven't set me up, I will remember your actions on this task."

You take your leave of Kayla to go get your ghouls. You find them quite easily in the forest nearby finishing off a corpse. One of them hits the other and points at you.

"The master is coming! The master is here!" Fatty says excitedly and runs up to you until you smack him down.
"I need the pair of you to accompany me to an important meeting. When we get there though don't do anything until I say so."

Fatty and Stinky follow you happily as you make your way to Green Eye's mine. You feel like you're walking into a trap the entire time, but at least you've got some help. Normally you wouldn't even be concerned, but you haven't rested or fed too much so you don't feel like you're a full strength either.

Eventually you see the mine and you also see a short figure surrounded by several figures at the entrance. They don't look like his usual men though. They're all female and look very cowed for one thing.

"I wasn't expecting this." You say.
"Well considering you arrived here in broad daylight demanding your tribute and then saying it wasn't good enough, I figured I'd offer you a selection. All of these girls are from the nearby villages." Green Eye says.
"What if I want them all?"
"Well then I guess you're getting them all, far be it for me to fight a vampire that can walk around in the daytime. Interesting trick. Didn't know you guys could do that. Almost hard to believe…"
"Well you saw it with your own eye."
"Actually I didn't, I got the report second hand from one of my men. Granted I trust him…or rather I trust that he believes what he saw, but let's just say, I have some questions."
"I'm not here to answer yours."
"True, but I'm going to ask anyway, because I strongly think something weird is going on here and I'd rather we talk than it come to violence."
"Of course you would, because you'd be on the losing end of that deal."
"Most likely, but are you so sure? I see you've brought two friends with you, meaning you're smart enough to not take this meeting lightly."
"Choose your next words carefully dwarf."
"I always do. I have a hunch that we're both being set up to kill each other. I'm betting you've been talking with that treacherous dop haven't you? I bet that's even who impersonated you. It's a liar you know. All of their kind are, and I should have known better than to have one in my community. Our relationship has been cordial and can remain that way. I will even increase the tribute. We don't have to fight." Green Eye says.

Something is very weird about all this. Green Eye seems a lot more relaxed than you are right now and with how much he's talking; it feels almost like he's stalling you for some purpose. Maybe he's got his men hiding elsewhere to ambush, but there really isn't any place to hide nearby.

The fact that he's pointed out potential treachery of the doppelganger makes you suspicious though. For all you know Green Eye's telling the truth.

You listen

You'll humor this asshole a little longer because despite him keeping calm, you can tell he's still scared by his heartbeat even from where you are. You're really not detecting any other signs of life either nearby. It's just Green Eye and the seven bitches.

"Treacherous is a funny word for you to use, considering YOU'RE the one crafting silver weapons and planning an attack." You say.
"Okay first of all, I was NEVER planning an attack. I'm not stupid enough to attack you on your own turf even during the day. And as for the weapons, well can you fucking blame me? I mean I got a vampire living right next fucking door. I wouldn't fancy my chances in a straight up fight, but I NEED to have something that's going to make me feel safer." Green Eye explains.
"Okay, so what about sending the dop to spy on me in the first place?"
"That was its idea! It kept swearing to me that it wouldn't get caught, damn fool I was to believe it. Look, I'll admit I fucked up on that end, but as I said, I got fucking scared and I'm not ashamed to admit it in front of all these bitches here. You want me to beg? I will. I'd even get on both knees, but that's a little difficult for me for obvious reasons. Though I'd still struggle with it if that's what it requires to save this community."
"That's pretty humble of you."
"Why do you think I'm out here by myself? I'm hoping that if you decide to just kill me anyway, you'll just be satisfied with that and not kill everyone else too. I know they ain't much and are even less than bandit scum in your eyes, but I'm fucking protective of them and I'd trade my life for my fuck up."

Sounds sincere and you really weren't expecting this reaction. You sort of wonder if the dop WAS setting you both up. You wouldn't put it past her.

You're still not sure, but if you are going to kill him you don't want to give him the slight chance of lifting that rifle up quick enough to shoot you.

"Green, drop your weapons, I'm coming over there to inspect your tribute."
"…okay! Whatever you say." Green Eye shouts, and drops his rifle, along with several smaller firearms and melee weapons (mostly daggers) on his person.

Seeing that he's dropped his weapons, you motion to your ghouls to follow you. You get closer and can sense how tense they're all becoming.

Though you misinterpret that as fear alone.

"Watch your head." Green Eye says as you're nearly right in front of his group of girls.

Who then all pull out flintlocks and catching you off guard at this close range they can't miss you even as nervous as most of them are.

Silver shot burns through your chest, head and a couple other places on your person. It doesn't exactly kill you, but you're dropped immediately.

Stinky and Fatty waste no time in attacking the ladies that have fired upon you, unfortunately they weren't really the threat anymore.

Green Eye ignores the ghouls tearing up the women and instead picks up his rifle and aims it right at your head as you attempt to get back up.

Part of your skull and brains go flying and you drop back to the ground. Still not dead, but with severe brain injury even as a vampire you're bewildered and paralyzed in your current condition.

You begin gibbering to yourself about something that happened a long time ago. It's actually when you were a child, but you don't even know what you're talking about, all your memories are a jumbled mess along with your thought process.

"I didn't steal the cookies!" you shout and then start laughing.

This exclamation is the last thing you ever say before another powerful blast takes nearly the rest of your head off. Your sight goes dark.

With practically just a lower half of your jaw still moving and the rest of your body just twitching, you neck is severed with an axe.