Interrogation/Confessions While Masturbating

Masturbate him while administering a strict interrogation and extracting confessions. Make sure his hands and legs are completely tied down so he cannot move. 

Pleasure him with nice lubricated and lovely strokes when he answers your questions and give your information.  

When he is more resistant to answering your questions then stop pleasuring him immediately until he resumes his cooperation.  Apply the chastity device again prior to untying him.