Pat O'Brien plays Sam Gallagher, a government agent posing as a "pileback" in a seaboard shipyard to track down German spies plotting to sabotage the facility.
Secret Command
During World War II, a covert US operation is launched to detect and eliminate Nazi saboteurs at a shipyard, employing an undercover intelligence agent to blend in as a construction worker and identify potential spies among the site's management and staff.
