There were a couple of scenes depicting black nightclubs in Dearden & Relph's 'Sapphire', here they've become an entire movie in this fascinating period peace featuring the likes of Dave Brubeck and Charlie Mingus, with Patrick McGoohan perfectly cast as a modern Iago, Marti Stevens as a formidable Desdemona and Maria Velasco a fox as the distaff half of the film's other interracial pair.