Ghastly Gargoyles Galore / Monkey Sea, Monkey Do

S4, E1: Mom's new pottery obsession leads Mona and her friends to investigate the pottery studio where they discover the clay is a little too life-like... in fact it seems to be alive! / When Lily flushes Charley's Mer-monkeys down the drain, the consequences appear to be disastrous. Thanks to the mysterious properties of sewer water the now giant creatures are on the loose and they're after Lily.