El caso del robo bajo el mar (Los cazamisterios 8)

When their parents aren't around, strange things always happen to Ulysses, Nora, and Bruno Misterio. Very, very strange things. Luckily, they have Bobo, a talking dog whose nose squeaks when he finds a clue! The Misterios have just arrived on a very strange island. Someone has stolen some priceless pearls, and they'll have to dive into the ocean to find them. They only have three days! Time is ticking… Tick, tock, tick, tock. And what's more… Are their parents really trapped in a submarine?