Monaghan and his assistants investigate paranormal phenomena, specifically the transference of souls from the dead to the living or, more simply, reincarnation. After an unsuccessful trip to Lebanon where a young boy apparently had detailed memories of another life, they're faced with the case of 6-year-old Joe Quinn who starts to have memories of another life belonging to someone named George: a home by a lake; that his "other mummy" had red hair; and of a drowning. Is he however remembering a past life?

Having concluded that the George young Joe has been referring to is in fact Georgina McKay who disappeared six years ago, the investigators tell the missing girl's mother about their reincarnation theory. This doesn't sit well with the woman who clings to the hope that her daughter is still alive. As Joe begins to recall more about Georgina's life, the information begins to point to her father as her possible murderer. The police re-open the investigation into the girl's disappearance when they find her body in the loch - exactly where Joe told them to look. However, Dr. Monaghan thinks that Georgina's spirit may in fact be out for revenge.