Christian Slater as John Mannion
Jared Leto as Basil
Stephanie Bagshaw as Emma Mannion
Crispin Bonham-Carter as Ralph
Jenny Downham as Anna, Ralph’s Wife
Claire Forlani as Julia Sherwin
Based on a little known Willkie Colins novel, Basil is the story of a man called Basil who falls in love with and marries Margarate Sherwin. What he doesn’t know is that a friend of hers, John Mannion, has been having an affair with her to seek revenge on Basils brother Ralph who had an affair with his sister and died in an abortion attempt.