Peter Rabe aka Peter Rabinowitsch, was a German American writer who also used the nom de plumes Marco Malaponte and J.T. MacCargo (though not all of the latter's books were by him). Rabe was the author of over 30 books, mostly of crime fiction, published between 1955 and 1975.
I read the Stark House Press double-novel edition of The Box and Journey Into Terror which I enjoyed. This penultimate novel by Dr. Rabe (he had a Ph.D. in psychology and taught at a university) is a mob novel ("From The Publishers Of THE GODFATHER" reads the front cover blurb). The bloody narrative is the takeover attempt made by the three Guarda brothers from the creaky, old dons running the outfit. Lots of dead bodies, tough guy mob patter, double-crosses, and violent action are what you find here. Rabe uses an original voice that I found easier to follow in this novel. I liked the interactions between the very different Guarda brothers. The humor is dry much like Westlake's is. The great front cover art is uncredited.