Evil GM having fun, Ever had a PC spy? Options

[Mardegun]

This thread is inspired by another thread I created recently.
In any case one of the things I had a LOT of fun doing was having a PC traitor :lick:

I can’t tell you how much fun it was to have a PC giving the arch-villain info on the group. One of the things I loved was the inner torment the PC had on giving the villain information. The point is that the traitor PC wasn’t evil to be evil; there was some real emotion with it. The anxiety and paranoia of the PC with their role was fun.

On the other hand I enjoyed the idea that some day the PC would betray the villain … fun all around.

Another thing I had fun with, was when the villain told the group they had a traitor among them. I know it doesn’t make any sense to tip your hand, but it was awesome seeing the group question each other.

Ultimately they did nothing with the information, which was great … it gives the GM the green light to do whatever you want. On the other hand the PCs don’t have any excuses if they let you have a spy among them.*

All of this is deliciously evil.

So has anyone else done this? How did it turn out?

* If the players don’t do anything about the spy be gentle. I don’t know about you, but I don’t like being screw with all the time.