J. Donald Wilson

A man, despondent over the death of his wife, wants to commit suicide but can't bring himself to do it. He hires a man to hire a professional killer to do the job. However, he soon finds out that his wife isn't really dead - but the man he paid to hire the hitman is, and he has no idea who the man hired or how to get him to call off the hit. (imdb)

Milton Higby, an inventor of gadgets that don't sell finds himself accused of a crime he didn't commit - the killing of a girl he had just met - and takes to the open road with the police in close pursuit.