The Agatha Christie Hour

The Red Signal (1x8)

Air date: Nov 02, 1982

Dermot West is in love with Claire, the wife of his best friend, Jack Trent. After visiting them one night he has a premonition, what he terms 'the red signal', that there is danger in the air, that death walks abroad and there is nothing that he can do about it. When his uncle is subsequently murdered, Dermot is the chief suspect.