The Emerald Murder by Arthur Wallace Frame For a Killer by Clint Morgan The Mark of Tai Fang by E. Hoffmann Price Green Ticket by Robert Leslie Bellem Sally the Sleuth by Barreaux Death Pays Off by Lars Anderson Alley Treasure by Paul Loomis Double Crosser by Atwater Culpepper Check and Double Check by Jerome Severs Perry Smuggler's Subterfuge by Ellery Watson Calder 7x10 128 pages Cover Artist: H. Parkhurst Publisher: Adventure House