The Sacrifice (1970)

Josh Radnor and Aya Cash star as a suburban couple whose marriage is tested when a husband's attempt to plan a BBQ at their home reveals ulterior motives and a newfound friend group he's kept secret - a local chapter of the Church of Baphomet. Equal parts funny and surprising, The Sacrifice is a story about the push and pull of marital compromise, the challenge of accepting new aspects of old relationships, and demons.