[s3e16] — Infernal Guinea Pig

The episode also deepens the bond between the lead duo. A murder investigation involving a Hollywood producer and a Bolivian drug cartel puts Chloe’s life in immediate danger when a filing cabinet is rigged with a bomb.

Abel is revealed to be the "infernal guinea pig" on whom the demons of Hell practiced their torture for millennia. [S3E16] Infernal Guinea Pig

"Infernal Guinea Pig" succeeds by grounding its grand biblical lore in intimate character development. It uses the absurdity of a prehistoric soul in a modern body to highlight the grim reality of the "Hell loop"—a cycle of guilt and violence that characters like Pierce and Charlotte are desperate to break. Ultimately, the episode suggests that while souls can be moved and bodies can be healed, true peace only comes from making the right choices in the present. Lucifer Season 3 Episode 16 Review: Infernal Guinea Pig The episode also deepens the bond between the lead duo

The narrative centerpiece is Lucifer’s "hell-raising scheme" to help Marcus Pierce (Cain) remove the mark of immortality. Lucifer resurrects the soul of the first murder victim, Abel, and places him into the body of a freshly deceased woman named Bree. This subplot serves several thematic purposes: "Infernal Guinea Pig" succeeds by grounding its grand