Knot of the Slain — T.C. Archer

For Gerald Forstner, veteran detective, son of a cop, cult hunter, and divorced dad, the face of Miami changes when he must solve a series of murders eerily reminiscent of his first case as head of Miami's Serial Killer Task Force. When Gerry is inexplicably healed of a mortal stab wound by a beautiful blonde murder suspect, he questions his sanity and wisdom in remaining on the force. Discovery of Icelandic artifacts that document immortal priests and female assassins breaks the case wide open. The case, however, becomes personal when each murderer becomes the next victim in a chain that links directly to his son