Fox’s “Lucifer” aired a surprsing episode this week. Tom Ellis’ character, Lucifer Morningstar, was visited by his brother and angel Uriel who gave him a choice: Hand over their mother or he will take Detective Chloe Decker’s life. In a showdown with his brother that ensued after the fallen angel refused to give up their mum, Lucifer stabbed him. He killed his own brother. What will happen in Season 2, episode 6?

Lucifer is going to go on a path of self-destruction. Full of guilt, the devil will drink, have sex rampantly and clash with Chloe (Lauren German) several times during an investigation. According to the official synopsis of Season 2, episode 6, suitably titled “Monster,” Chloe will have no choice but to partner up with her soon-to-be ex-husband Dan/Detective Douche (Kevin Alejandro).

The promo gives a glimpse of what to expect on the next episode of “Lucifer.” Chloe tries to console a shattered Lucifer by telling him that he isn’t really evil. But a broken and battered Lucifer tells Chloe that she doesn’t know a thing about who he is.

The owner of the posh nightclub named Lux pays Dr. Linda Martin (Rachael Harris) a visit in order to process his feelings. But Linda isn’t in a mood to play games. “I need you to be honest about who you are,” the psychologist tells the devil.

While Morningstar is dealing with his feelings of guilt, his brother Amenadiel (D.B. Woodside) bonds with their mother Charlotte (Tricia Helfer). She shows him something in “Lucifer” Season 2, episode 6 that leads him to the decision of being done with his father, God. “I’m done trying to please someone who isn’t even here,” Amenadiel says in the trailer.

The upcoming episode will also touch upon Halloween by showing Maze bonding with Chloe and Dan’s daughter, Trixie. They go trick-or-treating together in “Monster.”

Catch “Lucifer” Season 2, episode 6 on Monday, Oct. 31 at 9 p.m. EDT on Fox.