Rip Roaring Riley
G-Man Ted Riley is ordered to investigate happenings at Diamond Island, where a bogus Major Gray is reported engaged in manufacturing a new brand of secret gas for his own purposes. Riley blows up his motor boat just off the island and is picked up by Gray's men. On the island he discovers
Lloyd Hughes
Marion Burns
Grant Withers
Eddie Gribbon
Paul Ellis
Kit Guard
Wilfred Lucas