Build a movie plot around this: What happened to Thomas Archer's son? Murdered
The answer to this question is:
Thomas Archer (Ron Eldard), a disconsolate man, is led to an underground room by a distorted male voice on his mobile phone. In flashback it is shown that his wife had been attacked and his son killed for no apparent reason. When he reaches the underground room he finds a man hooded and tied to a chair and told by the distorted voice that this is the man responsible for the attacks. Without any proof he accepts everything he is told and proceeds to torture the man with various implements found in the room. After a while Archer realizes that this may not be the man responsible for the attacks. Against the orders of the voice he questions the man. They then collaborate in an attempt to escape what they now see as a situation in which the lives of both of them are at risk. It is revealed in flashback that his Doctor (Christopher Plummer) had made Archer an offer to get the revenge he needs. The doctor now reappears and tries to insist that Archer "finish it, and take back your life".