"I'll go with you!" Cai said, sliding to the floor head first, till his head hit the ground, the rest of his body still on his bed. "It rocked. Captain America's one of my favourites. Zoe totally strikes me as a Black Widow. Look at her memorising my room."

"I am not memorising your room," said Zoe, who had been memorising his room. Cai grinned at her upside down like he knew exactly what she was about. She narrowed her eyes at him, but she stopped looking around and sat down on the floor near Danny.

"Do you mean your nightmares?" Cai asked Danny. "You've mentioned them a couple of times. They really bad?"