Troubled waters! Cryptids—mythological creatures like the Loch Ness monster and Sasquatch—are Travis Wolfe's obsession, and he'll travel to the ends of the earth for proof. For cousins Marty and Grace, who have lived with Wolfe ever since Marty's parents disappeared, this means adventure—and danger! Now they're all en route to the South Pacific to track down a giant squid, but the freighter they're on seems to be haunted, and someone on board is determined to sabotage their mission. Will Marty and Grace get to the bottom of this fishy business, or end up at the bottom of the sea?