The Night Stalker by James Swain

Jack Carpenter is a specialist in finding missing children, due to his time as the head of Broward County Missing Persons Unit. Now going solo, he's hired by serial killer Abb Grimes to find his grandson, Sampson, who has been kidnapped from his home. Abb is to be executed in four days and wants Sampson back by then. Sampson's disappearance seems to be related to Abb's talking to the FBI about his crimes, since the ransom note specifically mentioned that Abb's relationship with the FBI will lead to Sampson's death. The police and the FBI are convinced that Sampson's father, Jed (and Abb's son) is the culprit--a case of the son following in his dad's footsteps. Carpenter is sure that someone is trying to frame Jed, but he is not sure why. On his own, Jack is racing against time and the authorities to bring Sampson home safely. Will he be able to find him and clear Jed's name? The Night Stalker is the second book in the Jack Carpenter series and is just as unputdownable as the first (Midnight Rambler). For readers looking for a great new thriller writer. The Jack Carpenter character is very similar to Lee Child's Jack Reacher.