The Dark Mirror

Psychological thriller about twin sisters - one good, one bad - who are implicated in the murder of a famous physician. After the dead man is discovered, a society beauty is placed at the scene of the crime by eyewitnesses. But the plot thickens when police discover that she has a twin sister.

Featuring a powerful dual performance from Olivia de Havilland, who won her first Oscar in the same year for To Each His Own.