Return to Sender is a 1963 British drama directed and edited by Gordon Hales and starring Nigel Davenport, Yvonne Romain and Geoffrey Keen. It was made at Merton Park Studios as part of the long-running series of Edgar Wallace adaptations.
A corporate fraudster is arrested for stealing a large sum of money from his partners. When he learns that the prosecuting counsel is led by a particularly brilliant barrister, he attempts to undermine the barrister's credibility by employing a shady individual to use smear tactics against him.
The Monthly Film Bulletin wrote: "A conventional but well-produced thriller in the Edgar Wallace series. The complicated plot has an interesting twist, and is rather superior to the dialogue and characterisation."