First published in Dime Detective Magazine, November 1935
There in that hospital on the hill two corpses had been found—each slashed with the same ghastly criss-cross marks. And now, on the operating table lay Doctor Nolan's daughter, cringing under the scalpel of the surgeon in black. Who was this murder fiend who masqueraded as a medico? What grisly impulse prompted him to use the instruments of healing for his kill-fest?
Norbert Davis (1909–1949) was studying law at Stanford University when he began selling stories to pulp magazines, where he found enough success that he never bothered taking the bar exam. His best-known characters are Doan and Carstairs—a private eye team made up of a man and a thoroughly clever Great Dane.