Silus Treatment

 is an unmarked quest in Fallout: New Vegas.

Quick walkthrough
Travel to Camp McCarran and enter the terminal. Go to the second floor. Go to the west end. In a room to the north is Carrie Boyd.

Speak to Carrie Boyd and agree to help her interrogate the prisoner.

Interrogate the prisoner and get him to tell about Caesar and the spy at the Camp.

Detailed walkthrough

 * Do not take a follower into the interrogation room. If the Centurion attacks you, the follower might kill the Centurion, ending the quest.

Rewards

 * NCR Fame


 * 300 Caps


 * 325 XP