Monster Down Deep

YACHT SINKS! JEWELLERY LOST! MASSIVE REWARD OFFERED!Ever since the shipwreck, California's golden coast has been filled with treasure hunters. Each one is after the same thing: the lost diamond necklace. But none are more determined than Cassie Stein. Her dad's beloved aquarium is falling apart, and they need money - fast! While racing to find the treasure before her rival, TJ, Cassie finds someth...