Two of Alfred Hitchcock's classic 1930s British thrillers. In 'The Man Who Knew Too Much' (1934), an English couple, Bob (Leslie Banks) and Jill Lawrence (Edna Best), go holidaying in the Swiss Alps with their daughter Betty (Nova Pilbeam), and are befriended by Frenchman Louis Bernard (Pierre Fresnay). When Louis is then shot by international spies, he warns Jill that his killers intend to assassinate a leading diplomat in Britain. However, before Jill and Bob can inform the police, Betty is kidnapped by the spies, who warn the couple that unless they maintain their silence they will never see their daughter again. In 'The 39 Steps' (1935) Richard Hannay (Robert Donat) becomes the victim of mistaken identity when a female corpse is dumped in his flat by a spy ring. He tries to track down the true murderers whilst being pursued by the police, and hooks up with an unwilling accomplice (Madeleine Carroll). Their adventure leads them all the way up to the Scottish Highlands, then back down to the London Palladium, where the secret of the 39 steps is revealed.