A killer that Marcus helped put away in the 1950s has apparently returned, killing cheating couples, and Marcus insists on helping Chloe solve the new murders. Meanwhile, Dan grows tired of Maze's antics around Trixie, and Charlotte demands the truth from Amenadiel about her missing memories.

Lucifer suspects that he is flying in his sleep, saving people in San Bernadino as an angel. Meanwhile, Marcus and Chloe grow closer, and Charlotte does whatever she wants figuring that God is on her side.