Not believing that he could have abandoned his future daughter, Lucifer sets out to prove an alternate theory: He must have been murdered.

Lucifer angles to be his father’s successor. Ella makes a painful confession. Chloe investigates a murder at an aquarium.

Lucifer’s so-called epiphany has Chloe worried, but it’s his physical transformation that’s really freaking her out. Also, Maze gives Eve a pep talk.

Lucifer and the team investigate the murder of a child psychiatrist, while Ella thinks about a big childhood secret that she’s been hiding.