His room shrouded completely in darkness, with the curtains pulled tightly shut, the only light emitting from underneath the doorway of Leo's bedroom, was that of the fire beneath the potion that bubbled away.
As the pink potion simmered away, Leo was bent over his potions book, scrutinising the instructions. He needed to wait for the potion to turn orange before he follow the next step of adding the wormwood, which he should add slowly until the potion turned yellow. He'd tried the potion a handful of times since he had returned home from Hogwarts, but he always managed to mess it up at this crucial stage, by adding the wormwood too early.