Publisher: 8

The Secret of Dr. Kildare

Max Brand

The Secret of Father Brown

G.K. Chesterton

The Secret of Sarek

Maurice Leblanc

The Secret of Smoking Swamp

T.C. Bridges

The Secret of the Barbican and Other Stories

J.S. Fletcher

The Secret of the League. The Story of a Social War

Ernest Bramah

The Secret of the Night

Gaston Leroux

The Secret of the Sands

Fred M. White