An ex-chorus girl lives on the Riviera, supported by a married man she doesn’t know is a crook.

Only a British cabdriver’s (Richard Attenborough) wife (Cathy O’Donnell) and lawyer (Derek Farr) believe him innocent of killing a little girl.

After leaving the British Secret Service, David Somers (played by Trevor Howard) finds work cataloging butterflies at the country house of Nicholas and Jess Fenton. After the murder of a…