When a murder investigation reveals the dark side of Hollywood, Chloe puts her life on the line to protect an innocent victim. Then, Lucifer comes up with a hell-raising scheme to help Cain, but when Amenadiel and Maze get involved, things don’t quite go as planned.
When Chloe and Lucifer’s investigation into the murder of a diamond thief points to one of Ella’s brothers as the main suspect, Ella is driven to prove her brother’s innocence and recruits an unlikely ally. Meanwhile, Linda is upset when Charlotte comes to her for help and Detective Pierce hashes out his issues with Amenadiel.
When an ecstasy cook-turned-chemistry-teacher is found murdered in a cozy Los Angeles suburb, Lucifer and Pierce must go undercover to help track down the killer. Meanwhile, Maze has a newfound attraction for someone that she used to despise and Charlotte has a revelation.
After Lt. Pierce’s true identity is revealed, Lucifer tries to figure out his motives. In order to earn Chloe’s assistance in his investigation of Pierce, Lucifer goes above and beyond to help her solve the murder of a professional surfer. Meanwhile, Amenadiel deals with a personal health issue.
In a flashback episode that takes place when Lucifer first came to LA, Amenadiel comes to retrieve his fallen brother, but is shocked when he is mugged. Amenadiel enlists Lucifer’s help to track down the mugger and Lucifer, in turn, offers his assistance – but only in exchange for a favor. Meanwhile, Chloe and Dan – who are still married – investigate the murder of an MMA fighter, Aidan Scott, at the hands of the same killer who mugged Amenadiel.
With the Sinnerman in custody, Lucifer is prepared to go to any length to get his devil face back. But, with another victim’s life on the line, will Lucifer’s conscience hinder or help? Meanwhile, Trixie is introduced to Charlotte and questions the relationship she has with her father.
Lucifer is worried when he realizes that recipients of his favors start to turn up dead. After he and Chloe investigate, they are finally brought face-to-face with the Sinnerman. Meanwhile, Detective Pierce returns to work after taking a bullet, Charlotte finds a new career and Amenadiel has a new love interest.
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, Ella tries to avoid Charlotte, and Amenadiel helps Linda deal with the death of her ex-husband.
A reporter seeks revenge after he discovers that Lucifer has been sleeping with his estranged wife. However, when it’s revealed that Linda is the reporter’s estranged wife, things get messy. Lucifer’s reputation and safety are on the line, especially when a serial killer from the past resurfaces.
When Lucifer discovers his ex-fake-wife, Candy, has gone missing, he hightails it to Las Vegas with Ella in tow. Together, the two of them work to find her, but interesting secrets are revealed along the way that could compromise the investigation. Meanwhile, Chloe is upset that Lucifer left on her birthday, so Linda tries to lift her spirits.