Scheduled for Execution Scheduled for Execution is a quest in . Vicente asks the Hero to kill a prisoner , Valen Dreth , who is soon to be released from prison . Valen Dreth is the same prisoner who taunted the Hero at the beginning of the game . The bonus is earned by not killing any guards during the course of the mission . Walkthrough . First , enter through the Imperial City Sewers , open the gate with the key provided by Vicente . Once inside , follow the marker and go to the tunnel to the right from the entrance and continue through the sewers through another door to more sewers . There are two locked doors . Both of them are Average locks . The Sanctum . Go down the stairs and go right through the gate , down the hallway , and then make another right at that room . Make yet another right down the hallway , up the stairs , and up the ladder to The Sanctum ( the locks difficulty depends on the Hero ' s current level , at level five it ' s an Average lock ) . Either use a lockpick , or use an Open Hard Lock spell . An Alteration level of Expert is required in order to use the spell . The spell can be purchased from Gaspar Stegine or Raminus Polus in the Imperial City Arcane University , or from Orintur in the Cheydinhal Mages Guild . Another option is to visit the Tower Stone , which grants the power to open a Hard lock once a day . There will be guards in the next few areas . The sewer network is dark , and the guards seem to have poor detection skills , so even a Hero with a relatively poor Sneak skill can evade them as long as they stay in the shadows , avoid line of sight , and sneak slowly . The guards will move around their posts a bit , but patience may be needed . Once inside , sneak and wait for the two guards to stop talking and walk away . This conversation is worth hearing at least for the humor , and it only takes a short while . There are now two options : either sneak forward or to the right . Ahead there are several guards to evade , however , the Hero can access the chamber the assassin jumped out of to attack the Emperor . This chamber is now lit by candles and leads to a sort of shrine to the Emperor where the guard captain in charge has set up his office . He is engrossed in whatever he is doing at his desk , and so will rarely notice his keys being taken . These keys open doors to all sorts of restricted areas across the Imperial City , and so are worth having . The other option is to sneak forward down the hall . Go left , a guard patrols that walkway , and go to the area where the final ambush occurred ( the place where the gate is locked from the other side , forcing a detour ) . There is a guard stationed at the staircase , but he can be evaded with relative ease provided the player uses good sneak technique . Imperial Subterrane . Go through the door to the Imperial Subterrane . There is one guard patrolling this area and he ' s carrying a torch . Avoid him in the shadows until he passes , then go to the Imperial Prison . Go straight up the stairs and down the hall , make a left , up some more stairs , turn around to the right , and go through the tunnels directly into the prison cell where the Hero started the game . A guard and a prisoner will be talking just outside of the cell . That prisoner is the target , Valen Dreth . The guard will speak to him for a short while , with Dreth ' s taunting voice reminding the guard that he will be gone in a few days , while the guard will still be stuck in ' this hole ' . The guard will leave when the conversation is done , leaving Valen alone . Kill him with ranged Destruction magic , arrows , or open his cell and kill him . If the player decides to converse with Dreth , the speech options include repeating Dreth ' s taunts from the beginning of the game , " You ' re going to die in here , " or mentioning that the Night Mother sent them , to which Dreth will respond " The Night Mother ? Oh . . No ! Guards ! Guards ! Assassin ! , " hinting that he was aware of the possibility of an assassination attempt . Kill him in whatever manner desired , but be sure to do it quickly or he can run back through the entire sewer , alerting the guards . After Dreth is dead , either exit through the sewers , or take the key on the table to the right from Dreth ' s cell and exit through the Bastion . The guards there will not be hostile , and this route is much faster and safer . Alternate methods . Instead of attempting to sneak past the guards in the sewers , pickpocket one of them for the Imperial Prison Key . After obtaining it , exit the sewers , enter the Imperial Prison from the front door , enter the Bastion , then go down the left door that says it requires a key to unlock . ( This does not work on the Xbox 360 version and possibly the PS3 version . ) It opens right next to Valen ' s cell with a single guard between Valen and death . This guard will not move , run past him , kill Valen , and exit as quickly as possible . Alternately , allow the guard to attack . Then yield to him by holding block and talking to him . He will stop attacking , allowing the conversation with Valen . After he leaves , kill Valen .