River Patrol is a 1948 British second feature ('B')[2] crime film directed by Ben R. Hart and starring John Blythe, Lorna Dean, and Wally Patch.

[3] The screenplay was by James Corbett and concerns a group of undercover British customs officers who investigate a gang of nylons smugglers.

[citation needed] Two British police officers, Robby and Jean, go undercover, pretending to be husband and wife in order to smash a ring of smugglers along the Thames.

The fake spouses befriend and dupe the night club owner and find evidence leading to the top of the smuggler ring.

It tries hard to be tough, but uneven direction, faulty timing, and cramped staging give its roughstuff a somewhat phoney ring. ...