By Pierre Boileau and Thomas Narcejac, dramatised by Adrian Bean.
From the novel that inspired Hitchcock's Vertigo, though this radio play reverts to the original source, set in 1940 Paris and 1944 Marseilles.
Jacque Flaviers is a troubled, complex soul, who has been rejected from the army on medical grounds.
He has been unlucky in love, and has a devastating fear of heights.
Working as a lawyer, an old friend contacts him requesting that he takes on a private assignment to spy on his wife.
Resistant at first, Flaviers finds himself empowered by the woman - and then eventually, fatally obsessed.
Jacque Flavieres....Michael Maloney
Madeleine /Renee....Sarah Smart
Paul Gevigne....Robert Pickavance
Dr Ballard....Seamus O'Neill
Old concierge....Daryl Fishwick
Director Pauline Harris