Grand adventures often begin where you least expect. Iris knows this because she's read them all. But when she and her best friend, Sam, stumble upon an unusually dry riverbed on the outskirts of town, they make a discovery beyond anything Iris has read about: a hidden city, lost in time and shrouded in mystery. Storm clouds gather as secrets begin to surface. Can Iris and Sam uncover the truth in time to keep their friendship afloat, or will history repeat itself and pull them apart forever? 'A beautifully drawn coming-of-age adventure story.' Kazu Kibuishi, creator of Amulet 'A charming tale of mystery and friendship, and an inspiring introduction for young comics creators.' Shaun Tan, creator of Tales from Outer Suburbia and The Arrival 'Treasure in the Lake is a visual treat, and a heartfelt, rollicking adventure.' Remy Lai, creator of Pie in the Sky and Pawcasso 'An enchanting tale full of mystery and wonder and secrets. Once I stepped into Jason Pamment's beautifully drawn world, I didn't want to leave.' Craig Phillips, creator of Giants, Trolls, Witches, Beasts