David Harding, Counterspy
Clint Johnston, Tom Reed
Howard St. John as David Harding, William Parker as Lt.Cdr. Jerry Baldwin, Audrey Long as Betty Iverson, Harlan Warde as Hopkins, Alex Gerry as Charles Kingston
Jerry Baldwin, a U.S. Navy officer, is brought to a city where torpedoes are manufactured for the Navy, and his assignment is to find out information who is leaking out to the enemy.