If I Had a Nickel: Roy Ballard Mysteries, Book 3 (Unabridged‪)‬

Alex Dunn owned one of the most valuable collections of hobo nickels in the world, and it appears somebody killed him for it. Now Roy Ballard and Mia Madison are hired by the insurance company to track the collection down, which means they might reveal the identity of the killer in the course of their investigation. But the more they dig, the more suspects they uncover, including Dunn's children, his ex-wife, and a buxom masseuse who takes a hands-off approach to the services she offers.