Jennifer Peters (Justine Waddell) attempts to save her brother Roy, who has been abducted by a serial killer known as the Riddle Killer, or R.K, due to his use of riddles in the murders he commits. Jennifer has recently written a book about the nature of serial killers, to which R.K. has taken offense. Jennifer follows R.K.'s clues and finds Roy, but fails to save him as the car in which he is trapped explodes.