Four men who have been friends since high school discover they're being blackmailed over the death of another childhood friend. When one of the four turns up dead, it's up to Nichols and Stevens to uncover the truth behind a 22 year old mystery.

A body discovered at a construction site bears all the hallmarks of a serial killer who was executed over six months ago. Detective Stevens is faced with two grim possibilities; either they're dealing with a copycat, or she helped put an innocent man to death.