 Sam interrogates inmate Arthur de Rhodes, a serial killer whom she put in a prison for the criminally insane six years earlier, over a recent murder of an elderly man from poison gas inhalation that bears striking similarities to his modus operandi. However, when another murder occurs, Sam wonders whether the culprit could possibly be the clever de Rhodes, or a copycat killer. All bets are off when de Rhodes eventually escapes, and no one is safe, especially Sam. Meanwhile, the unseen Jack of All Trades now begins to target and terrorize Angel to drive her away from Sam.