[In "The Man on All Fours"] we have some not unpleasant sleuthing by Judge Ephraim Peck, who appeared in "Murder Stalks the Wakely Family," ferreting out a coil of fatal violence at Senessen House, the seat of the strange clan of mentally deranged and otherwise suspicious folks near Sac Prairie, Wis. Who stabbed Ray Horrell, son-in-law of old Mrs. Gravisa Senessen, matriarch of the house, unless it was maybe the beldame herself? And what caused the rest of the lively doings in the murder mansion? There are sixteen people to watch…. Ye author succeeds in keeping his secret to the final chapter, which is as it should be.

Will Cuppy, in a review of "The Man on All Fours," in New York Herald Tribune Books, November 18, 1934, p. 18.