Four films from the classic 'Carry On' series. In 'Carry On Spying' (1964), Barbara Windsor (in her first 'Carry On' appearance) plays a trainee spy in the British Secret Service, who must use all her talents to prevent an evil mastermind from the organisation S.T.E.N.C.H. obtaining a secret formula. Master spies on the case include Kenneth Williams, Charles Hawtrey and Bernard Cribbins. In 'Carry On Cleo' (1965), ancient British slaves save Caesar (Williams) from assassination in Rome, 50 B.C. Meanwhile, Mark Antony (Sid James) romances Egyptian Empress Cleopatra (Amanda Barrie). In 'Carry On Screaming' (1966), detective Bung (Harry H. Corbett) investigates a mad professor (Williams) and his sister, who are turning their victims into shop window dummies. Finally, in 'Carry On Cowboy' (1965), Marshall P. Knutt (Jim Dale), a former sanitary engineer, becomes the sheriff of Stodge City in the Wild West and must help a young woman beat the Rumpo Kid (James), the outlaw who shot her father.