If you love the paranormal mystery aspects of Lucifer but want a break from the heavenly mythology, Fringe is a great option. The show centres on a possibly mad genius scientist with a very out-there history of research, his sarcastic estranged son, and an FBI agent who brings them in to investigate strange happenings and instead uncovers a universe-shattering conspiracy that's connected them all for years.
Watch Fringe on Amazon Prime.