"I guess I'll have to make it so he really needs to sign something then," Lucifer shrugged. "Let him down," he said to the minions. And then get out of here."
Henry was released from his chains and thrown pretty mercilessly to the ground. He let out a yelp of pain, but once down, he was honestly so relieved to have the pressure off of his abused shoulders that for a moment, the noises he made weren't of pain but of gratefulness.
Then Lucifer held the phone in one hand, and went to grab Henry by the wrist, dragging him over to a large basin of water. Once there, he pulled Henry's blindfold off.
Henry blinked his eyes burning even at the dim light of the basement. He caught sight of Iestyn, looking terrified. "Hi," he said, to Iestyn. To Lucifer - "don' make him watch. Please. Don' do this to him."
"But you said you wanted water," Lucifer said, pointing to the basin.
"Oh no-" Henry muttered, correctly assuming Lucifer had something awful in mind.
Lucifer swapped to the front camera, and he went to scoop Henry up, the camera on both of them. Then he shoved Henry's head into the basin of water and under. Henry struggled, but his arms were near useless, and they flailed about without really helping at all.