The Third Walker on AllMovie

Teri McLuhan, the daughter of theorist/philosopher Marshall McLuhan, was the producer/director/co-scripter of the Canadian The Third Walker. The story concerns a pair of twins, separated at birth (McLuhan was herself an identical twin). Nearly three decades later, the twins are reunited at their father's funeral. They become the closest of friends, totally shutting out a third, non-twin sibling. The adult twins are portrayed by William Shatner and Colleen Dewhurst. Teri McLuhan's celebrated father plays an "invisible cameo" as the voice of a judge.