He told her that he was keeping Mona's principal alive because if he died, he would take Elaine with him. Lucifer admitted that there were circumstances in the future where he required Elaine to remain alive and well. She looked into Waddington's memory and saw that he had mistakenly thought that Mona uncovered that he was secretly selling illegal drugs. This was the reason that he murdered her. Afterward Elaine returned to her body and Lucifer allowed Waddington to die. Elaine was later found by the police who returned her back to her home.