Sam Loomis (John Gavin) and the Pheonix-residing Crane sisters (Janet Leigh‘s Marion and Vera Miles‘ Lila) were, of course, never in the same room together. But once you get past this and after you contemplate the fact that Lila has her palm pressed against Sam’s rib cage, you immediately consider the possibilities.
Could straight-arrow Sam have been two-timing Marion with a concurrent affair with Lila? No — that would have been too much, too reckless, too thoughtless for a financially pressed owner of a hardware store.
But after Norman Bates was arrested for the murder of Marion and Martin Balsam‘s Arbogast and the whole thing had been put to bed, could Sam and Lila have gradually become lovers? As a way of embracing life and renouncing death? This, to me, seems conceivable.
I always assumed that Peter Bogdanovich falling in love with and marrying Louise Stratten, the younger sister of his murdered lover Dorothy Stratten…I always thought he was motivated by the same spirit of renunciation and renewal — an attempt to replace the trauma of murder with the bloom of fresh love.