An unhappily married composer has an affair with his sister-in-law, which results in her pregnancy. When his wife refuses to grant him a divorce, he hatches a convoluted scheme to murder her - but nothing goes according to plan. Thriller, starring Laurence Payne, Patricia Dainton and Jane Griffiths.
The Third Alibi is a Film programme that first aired in 1961 and has been classified a PG certificate.
