The Doc ~ Revised Edition by Tim Desmond

When a dying friend and fellow Civil War reenactor asks California physician Hank Houston to find his daughter’s killer, Hank has no idea what problems his snooping will cause. The last thing he expected to uncover was a US murder squad being run by the DHS. But this domestic black ops unit is determined not to be exposed and, as Hank gets closer to the truth, he discovers just how far they will go to hide all their dirty little secrets.