Sea Devils (1953) - (Movie Clip) I Call It Treachery
Rock Hudson (as English "Gilliat"), who selflessly swam out to try to rescue Countess de Remuset (Yvonne de Carlo, whom, he still doesn't know, is really a British spy, on his side), is not impressed that she's convinced his captors not to kill him, in Raoul Walsh's Sea Devils, 1953.