"Are you calling in?" Barty signalled to the waiter so he could pay, already with his wallet at the ready. "Take one of the pills now. You can sleep when we get home." And, yes, he called it 'home' deliberately. Just as he kept calling Sam 'darling' and 'my love' quite deliberately. Sam knew he was a manipulator, why would he let him down by not at least trying to manipulate him?

"I'll make sure you sleep well." His heart was beating fast. He was trying not to let it show just how gleefully happy this was making him.