Bobby Navarro rides his Harley into another adventure when he discovers the body of a young woman in the trunk of a parked car in Williams, Arizona, on old Route 66. Who would leave a car, with a body in it, parked on the main street of town? And, who told the police Bobby had been the driver of the car, because they soon take him to the police station to conduct an "interview". Then, to make matters worse, Bobby realizes one of the police officers is a woman he had a crush on in high school. And, that's just his first night in town. Next morning, Bobby has breakfast at a local diner, where everyone is talking about the murder and the arrest of one of the diner's cooks. The staff don't think the suspect is guilty of the crime, and one of the locals, Daryl King, lets slip to Bobby that he knows who the guilty party really is. Trouble is, Daryl won't tell the police whatever it is he knows. In fact, Daryl has trouble talking with anyone. The fact that he made an exception in Bobby's case, leads to Bobby agreeing to work with the police to find out if Daryl does know who the killer is. Bobby's part in the investigation takes him to the Holiness Pentecostal Church of the Brethren, a church run by an ex-biker and two of his former gang members. There, he discovers a host of suspects, leaving Bobby to wonder whether he will have to "get religion" in order to help solve this Murder on the Mother Road.