By
eHow Culture & Society Editor
Difficulty: Moderately Challenging
Step1
Closely observe the people around you. Pay attention to anyone acting differently than normal. Watch if anyone ingratiated himself into a new social circle and how he is being received. By paying close attention, catch a traitor's behavior as it changes drastically.
Step2
Ask people you know you can trust if they suspect anyone. Bring it up casually in conversation. Make a mental note of who is suggested by others. Seek out confirmation of your suspicion.
Step3
Eavesdrop on conversations. Hide in the bathroom to hear what people say. Make notes of incriminating things you hear and go over them later. Observe who's forging close ties with one another.
Step4
Plant rumors with people you suspect. Make the rumor something distinct that you only tell one person. Rumor repeated? That's the traitor; it's the one you told and know can't be trusted. The person may not ultimately be the traitor, it narrows down who you should watch.