When she learns about the murder of her childhood best friend, a nun join forces with a detective to find the killer.

Detective Jed McCracken wonders if his first phone call of the week is a prank, until he realizes he's talking to his late partner's widow. Jed hasn't spoken to Sarah since her husband's death and he's surprised to discover that she's now Sister Lucie. Distraught over breaking news about the murder of her childhood best friend, Sister Lucie is intent on finding her killer.

Jed and Sister Lucie renew their friendship while untangling a network of deception, lust and greed. Although they appear to be closing in, the killer proves elusive. Jed sets a trap, and Sister Lucie becomes the bait. Will Sister Lucie outwit the murderer...or become the next victim?