Killjoy: A Novel (Buchanan/Renard/MacKenna, Bk. 3)

Avery Delaney's razor-sharp mind and ability to decipher evidence have made her an expert crime analyst for the FBI. Now she will have to use her skills on a case that hits painfully close to home.

Avery's beloved aunt Carlyn was on her way to a posh spa in the Colorado mountains, but she never arrived. With scant clues and fewer resources, Avery must track down Carolyn - and outmaneuver a brilliant killer named Monk, who is part of an elaborate plot of madness and lethal vengeance.