255 pp. First mystery, and one of only two using this pseudonym, by Frederick Faust, who also wrote under the pen name Max Brand. From the half-title page: "It is the tale of John Witherby, physical superman, in a contest of strength and racing, smashing, violence with a man called the Doctor, and his gorillas, for possession of John's inheritance and for the fancy of the Doctor's female decoy. Savage and brutal without let-down, it casts a rare spell." From the jacket flap: "It is a favorable sign in a murder mystery if the author has refrained from the use of any secret underground passage and of any sly and slinking Orientals. That means a suspicion that the mystery has originality. And originality is the feature that first flashes at you out of the pages of Cross Over Nine."
