Hostage by Kay Hooper summary:
Noah Bishop and his Special Crimes Unit are on the hunt for a man, who escaped from custody after hiding $10 million from a bank robbery, in Hostage, the second in a trilogy of related thrillers within this long-running series by Kay Hooper.
Cole Jacoby is on the run after mysteriously escaping from the custody of two agents, who have no memory of how he might have disappeared. Hole up in his cabin in mountains of Tennessee, agent Luther Brinkman is shot in the leg trying to apprehend him. Found by fellow agent Callie Davis, the need to work together to figure out how to bring Jacoby to justice.
Separately, Hollis Templeton and Reese DeMarco of the SCU are on a special, non-crime related mission to interact with spirits without the pressure of chasing the bad guys. They go to an age old mansion in Tennessee at the request of Anna Hamilton to try to communicate the spirit of Anna's husband, who had died years ago. They are completely unprepared, however, for what they discover during their investigation.