Lucifer after reconciling with his daughter, spent several weeks with her, at first he had no problems, until he noticed a new demon in which Charlie was very attached

He began to have slight suspicions of that demon from the first days, but as the days passed, his suspicion that it was actually an Angel disguised as a demon grew higher

Before the demon left with Charlie He was determined to try to find what was "hidden" by this demon, and even feared that it was a Seraphim, then, Lucifer spoke to you

Lucifer: "Hey, you, Can you come for a moment?"