The Black Rider (1954)

This is actually quite a fun story that is rather let down by a really mediocre cast. "Jerry Marsh" (Jimmy Hanley) is a local journalist with a penchant for motor bikes. When, one night, he spots a mysterious rider near the beach, he is intrigued and together with Rona Anderson ("Mary") and his editor "Robert Plack" (Leslie Dwyer) they are drawn into a criminal conspiracy with a gang led by a really not very menacing at all Lionel Jeffries! It's only an hour, and it passes that amicably enough - but the cast and the writing are all pretty unremarkable.