Robert Newton gives a restrained and powerful performance as a cuckolded doctor exacting revenge on his high-spirited wife by abducting her young American lover, then keeping her guessing as to where he is, and whether he is still alive. Sally Gray is nothing short of brilliant as the wife. And, Naughton Wayne is magnificent as the dogged police inspector. Obsession combines brilliantly chiseled characterisations with an extremely intelligent and literate screenplay. Keep it on tape, because no one gets all the nuances the first time he or she watches it, but it's all put together so brilliantly the repeat viewings become a glorious pleasure.