In order to root out a Nazi look-alike of one of the Blackhawks who has infiltrated the team, Chop-Chop claims to have created a secret potion that is deadly poison to spies but not to an innocent man. Each of the suspects is brought into a room alone and forced to drink the concoction, which is actually just a mix of red-hot and plain horrible kitchen spices. All of the Blackhawks gag on the mixture, except for Hendrikson who pretends it doesn't bother him, revealing him to be the spy.; True story of Barney Ross, boxer turned Marine.; Clad in their familiar prison striped uniforms once again, members Hank and Jackie return to lead the Patrol on a mission to Japan.