A group of neighborhood teenagers discover some suspicious goings-on near a naval base in San Diego, and suspect that a foreign espionage ring is at work trying to find out military secrets.

Directed by: Robert B. Sinclair
Written by: Harry Clork & Franz Schulz
Runtime: 70 minutes
Tagline: MEET THE KIDS WHO PUT THE "BOOM" INTO THIS BOOM TOWN!
Cast:
Bonita Granville Bonita Granville
Betty Haines 
Ray McDonald Ray McDonald
Hank Parker 
Dan Dailey Dan Dailey
Al Haines 
Leo Gorcey Leo Gorcey
'Snap' Collins 
Charles Smith Charles Smith
Crawford Cortland 
Dorothy Morris Dorothy Morris
Mildred Burnette