The Unsung Hero ~ Suzanne Brockmann

This is the first book in the Troublehooters series. Tom was injured in the line of duty, and spent several weeks in a coma, now he has 30 days off, for recovery and he has gone home to visit his uncle. When he gets there he discovers that Kelly is back in town too, taking care of her dying father, who is also Tom's uncle's best friend. Along the way Tom thinks he sees a terrorist that he spent months hunting years before, but the terrorist is supposed to be dead, and he thinks his injured mind might be playing tricks on him.