Even while in custody, the Sinnerman continues to pull the strings, revealing a victim is trapped in a reservoir filling with water.
Lucifer realizes that killing a human would break his Father’s rule and potentially restore his devilhood, but he ultimately discovers he cannot bring himself to do it. The Big Reveal: Who is Marcus Pierce? Even while in custody, the Sinnerman continues to
If you'd like to dive deeper into the fallout of this reveal: Even while in custody
At Lux, Lucifer stabs Pierce in the chest. After "dying" and promptly rising again, Pierce’s true identity is revealed. Pierce’s true identity is revealed.