While holidaying in Ireland, a pregnant children's author finds her mental state becoming increasingly unstable, resulting in paranoia, hallucinations, and visions of a doppelgänger.
Susannah York
as Cathryn
René Auberjonois
as Hugh
Marcel Bozzuffi
as René
Hugh Millais
as Marcel
Cathryn Harrison
as Susannah
John Morley
as The Old Man
Barbara Baxley
as Voice On Telephone (uncredited)
