Lucifer Morningstar has decided he’s had enough of being the dutiful servant in Hell and decides to spend some time on Earth to better understand humanity. He settles in Los Angeles – the City of Angels.
Lucifer has left Hell to take up a life on Earth. When a friend of his is murdered Lucifer joins forces with the good side of the law to discover who the perpetrators are and to give them what they rightfully deserve.
When a movie star's son is killed after being chased by the paparazzi, Chloe takes a deep look into the case with a little help from Lucifer. Meanwhile, Maze and Amenadiel continue to encourage Lucifer to go back to hell.
In an effort to get over his infatuation with Chloe, Lucifer decides that he must seduce her. Meanwhile, the two team up on a missing girl case and Amenadiel confronts Maze about his concerns with Lucifer.
After the bodies of two young L.A. transplants are found poisoned, Chloe and Lucifer hunt for the killer. Upon Maze convincing Chloe to go out for drinks, which the detective perceives as an act of friendship, but is actually part of a bet between Maze and Lucifer, the two make a shocking decision.
Guilty and self-destructive, Lucifer clashes with Chloe during an investigation, leading her to team up with Dan instead. Meanwhile, Amenadiel bonds with Charlotte, and Maze takes Trixie trick-or-treating.
Lucifer and Chloe investigate a mysterious masked killer who is poisoning college students. They also try to make sense of their new relationship, after a long-awaited kiss. Meanwhile, Charlotte visits Linda for advice on a touchy subject.
Lucifer has gone off the grid and cut off all contact from his family and the police department, following Chloe's near-death. But the murder of an up-and-coming guitarist causes him to resurface - with a new mystery woman. Meanwhile, Lucifer's mom realizes she may have found a way to finally get them back to Heaven.
Lucifer attempts to control his emotions when he learns the flaming sword is the only way the family can return home. In the meantime, a therapist and head of admissions at a prestigious private school is found dead.
Charlotte accidentally burns a man to death, leaving Lucifer to keep Chloe from figuring what really happened, so he puts Maze in charge of locating Charlotte and Amenadiel, who have both gone missing. Meanwhile, Lucifer seeks a permanent solution for the ticking-time-bomb that is his mother.
When a food chemist is found dead, Lucifer and Chloe's investigation pits them against an unexpected face - criminal defense attorney Charlotte Richards. Everyone is caught off guard when they see her back in the precinct. As Lucifer tries to understand her return, he makes a shocking discovery that helps solve the case.
When Lucifer discovers Candy has gone missing, he hightails it to Las Vegas with Ella in tow. They work to find her, but interesting secrets could compromise the investigation. Meanwhile, Chloe is upset that Lucifer left on her birthday.
A reporter seeks revenge after he discovers that Lucifer has been sleeping with his estranged wife. However, when it's revealed who the estranged wife is, things get messy. Lucifer's reputation and safety are on the line, especially when a serial killer from the past resurfaces.
When a murder is connected to a celebrity dating app, Lucifer and Chloe question all they know about the world of social media in order to solve the case. Meanwhile, Amenadiel helps Linda deal with the death of her ex-husband.
When a superstar singer's life is threatened, the team is thrust into the world of big-ticket stadium shows, crazed fans and divas, giving Lucifer a run for his money. Meanwhile, Charlotte tries to help Linda and Maze repair their friendship.
Lucifer and Chloe investigate a murder where a witness claims a winged guardian angel saved her life; Pierce and Chloe's relationship takes an interesting turn; Lucifer discovers something that could change everything.
When a ballerina is brutally murdered, Lucifer helps Chloe solve the case; Amenadiel begs Charlotte to help him with an important plan; Maze remains devoted to a task from which Pierce asked her to back away.
When Chloe takes some time off, Lucifer is forced to work with Dan on a murder case involving a dog show. Meanwhile, Charlotte and Maze have differing ideas for Chloe's party and after a wild night, Chloe rethinks a life-changing decision.
When Lucifer and Chloe investigate the death of a woman, they discover that they may be pursuing the wrong suspect. Then, Charlotte risks her safety when she decides to take matters into her own hands, and just as Lucifer makes a huge confession, Chloe gets a tragic phone call that changes everything.
Shocked by someone's death, Chloe, Lucifer and the rest of the team work together to investigate and take down the killer. Then, Lucifer has an epiphany, Maze decides to mend a broken friendship and Chloe finally sees the truth.