When private tutor Thomas Arnold (Sir Cedric Hardwicke) becomes headmaster at Rugby, a boy's preparatory school in England, he puts into place a policy of strict punishment for unruliness and bulying. Arnold finds an ally in Tom Brown (Jimmy Lydon), a new student who is subjected to hazing and abuse by a group of older boys and is pressured by his friends to keep quiet about it. Fed up, he leads his fellow classmates in an underground rebellion against their tormentors. But certain unspoken rules still apply at the school and Brown loses his hero status when he is accussed of breaking the Rugby code of silence.
On the eve of World War II, a British officer revisits Waterloo Bridge and recalls the young man he was at the beginning of World War I and the young ballerina he met just before he left for the front.
After experimenting on himself and becoming invisible, scientist Jack Griffin, now aggressive due to the drug's effects, seeks a way to reverse the experiment at any cost.
A German village is stricken by a series of murders that appear to be the work of vampires.
International con artist Martha Hicks a.k.a. Countess von Claudwig is released from another stay in prison and decides to treat her rheumatism with a stay at her estranged husband's hotel at a Wisconsin spa. There undercover, she checks in on the two daughters she abandoned as infants.
Dr. Henry Jekyll believes that there are two distinct sides to men - a good and an evil side. He believes that by separating the two, man can become liberated. He succeeds in his experiments with chemicals to accomplish this and transforms into Hyde to commit horrendous crimes. When he discontinues use of the drug, it is already too late.
In World War I London, Myra is an American out-of-work chorus girl making ends meet by picking up men on Waterloo Bridge. During a Zeppelin air raid she meets Roy, a naive young American who enlisted in the Canadian army. After they fall for each other, Roy tricks Myra into visiting his family, who live in a country estate outside London, his mother having remarried to a retired British Major. Myra is reluctant to continue the relationship with Roy, he not aware of her past.
Bob Naughton and Eddie Connolly are identical-twin brothers that were separated in infancy. Bob is raised by a rich lawyer, has all the advantages, but is a drunk with no moral character. Eddie is a pianist in a speak-easy but a man of high character. Bob commits a murder and Eddie is blamed and faces life in prison.