Aisha laughs, moving her hand towards Salim like she is trying to flick water off her fingers. "Love," she says as the unnaturally bright hue fades from his skin, "how in the world did you turn yourself yellow?"

He tilts his head towards a giggling Asra who looks awfully pleased with himself for being all of three and a half years old.

"I've had a very eager lab assistant," Salim says. "Note to self, no more salamander tails in potions."