A surprise son, and a deadly secret... The heart-stopping conclusion to Callahan Confidential It's a shock to private investigator Mike Callahan to see Shayla O'Hare again, and with a child in tow—especially with shots flying her way. Protecting the pair must take priority over their tangled past. Is she being targeted for her family's crimes—including possibly killing Mike's father? And what will Mike do when he realizes her son...is actually his son, too?