What could be more normal than summer holidays at Grandma and Grandpa's house by the coast? They're the best.

Biddy, Louie, our dog Teddy and I are looking forward to just being kids - and a dog - especially after the last adventure. Whoah!

But trouble is following us around. This time, it all has to do with a 'drowned' guy, an international poaching heist - that's super sleuth trade talk - and a Ninja Pirate.

Danger on the high seas! The super sleuths are at it again.