Find Collar 14 : Dean Domino Find Collar 14 : Dean Domino is a in the " " " Dead Money " . Overview . This quest is one of three given to the Courier after completing the quest Sierra Madre Grand Opening ! . Speaking from the hologram fountain at the center of the Villa , Father Elijah instructs the player to recruit three companions , including Dean Domino , in order to carry out a heist at the Sierra Madre Casino . Detailed walkthrough . If you have at least 75 Lockpick skill and enough health to run through a toxic cloud , you can reach Dean almost immediately by opening the locked gate at the end of the alley directly south of the entrance from the Villa . The first toxic region you find beyond the gate , with two staircases in front of you and at least one ghost person , is NOT the way to reach Dean , only a treasure trove that you should loot after Dean joins you and provides the Unclean Living perk . Instead , when you see the area described , turn right ( south ) and follow the sheltered awning until you see another passage leading to the right ( west ) . There will be another corridor leading south that is filled with toxin . Run down that , and you will reach Dean ' s demesne . Lacking the required skill , it will be necessary to run the gauntlet of Dean Domino ' s traps . The street leading to the right in front of the stairs you see when you first enter the Residential District , and the makeshift walkway to the left at the top of the stairs , lead to side rooms with a few supplies , guarded by a ghost people variant and a shotgun tripwire , respectively . The doorway leading right from the top of the stairs has a pressure plate that triggers a double shotgun trap . Inside the room is an armed frag mine , and the doorway on the other side is guarded by a tripwire - activated grenade bouquet . The doorway opens out to overlook a large enclosed courtyard , easily reached by descending the stairs to a smaller courtyard . However , the large courtyard is filled with toxic gas , and watched over by a Ghost Person that remains in one place ( second floor balcony , the very center of the opposite side of the courtyard ) . The courtyard itself holds a treasure trove of energy weapon ammunition , marked by a convenient glowing package of Rad - Away , but gathering it without Dean ' s help is almost certain to drain your health dangerously low . The cloud doesn ' t extend to the area under the awnings of the buildings surrounding the courtyard , though , and directly under the Ghost Person on the second floor you ' ll find a storage area guarded by a frag mine , containing one of Dean ' s stashes . To continue toward Dean , you must climb the staircase at the entrance of the toxic courtyard , leading to a room that opens onto the courtyard balcony . There is a tripwire that triggers a grenade bouquet in the doorway to the room . The balcony is too narrow to sneak past the Ghost Person , even using a Stealth Boy , so be ready to fight . Once completely around the balcony , another door leads to a pressure plate that sets off a shotgun trap . This trap is aimed at a fire extinguisher in the doorway , which explode violently when shot . From the next room , there are two poison - free paths that can be taken through the toxic cloud covering the alley . One is down a staircase from the room with the bed in it , the other is out onto a balcony from a second room reached from a hole in the wall of the first . This upper path has more traps than the lower path and can only be safely used in one direction , but it does allow the player to easily ambush a ghost person waiting at the end of both routes , while the lower path forces the player to walk down a hallway the ghost person is watching directly , and may require a Stealth Boy to achieve a sneak critical . Once you reach the area with Dean , you will start hearing him speaking to himself . Continue to the end of the street to find the stairs to Dean Domino around the last corner . Continue up until you find Dean , drinking a Sierra Madre martini and enjoying the view of the Residential District through his makeshift bay window . He won ' t talk to you until you sit in the chair next to him , so you must sit on his obvious trap and hear him out . During the conversation , you will have several opportunities to make skill checks to guide the conversation . However , if you want to avoid having to kill Dean in the finale , you must NOT choose the Barter based conversation option ( Dean will laugh off your display of excessive knowledge here , but he will neither forget nor forgive it later ) . There is no consequence in succeeding on either the Explosives or Speech check . You will also have to avoid the insulting or aggressive standard replies , and essentially agree to be his obedient errand boy , if you want to have a chance to save him from his own madness . Contrary to previous entry , you can loot all of the stashes while he is present without being forced to kill him . Again , he will talk to you and pretend it ' s no big deal at first , but as soon as he thinks he has the upper hand later , his rage and shattered ego will leave you with no choice but to kill him . If your Explosives skill is at least 30 , you can disarm the grenade bouquets Dean has set up in the Residential District . This will give you 9 , which will be very useful in destroying hard - to - reach hologram emitters that you come across ( such as during the quest : Heist of the Centuries ) . Once you get Dean Domino to join you , be sure to travel around the Residential District and loot it thoroughly . In particular , the center of the large courtyard and the area behind the locked gate ( accessible through the toxic hall north of where you meet Dean ) have enough supplies to keep even Hardcore characters going for quite a while .