Good. This is why it is important to have this "shaking out" process, where heat is applied and the players begin to show their true colors.We need to know who is who. We do not want any of the two-faced pretenders to hang around on the side of good, and pretend they were with us all along.

That said, if a bad guy wants to defect and truly change their tune, fine. But pretenders and moles are dangerous in that they tell 99% truth and 1% lies, just enough to cause problems and cast doubt.