His credits include the films 10½, L'Affaire Dumont and Les 7 jours du Talion, as well as episodes of the television series Drop the Beat, The Hunger, Big Wolf on Campus, Vampire High, Les Bougon, Minuit, le soir, 19-2 and Au nom de la loi.
Manley underwent 10½ hours of brain surgery June 21, 2006, to treat a Colloid cyst, and is experiencing minor, isolated memory loss.
He took second place at Viña del Mar 1945, with 10½/13, behind Guimard, then won Mar del Plata 1945 with 11/15, ahead of Ståhlberg, and repeated at Mar del Plata 1946 with 16/18, ahead of Guimard and Ståhlberg.