Samantha Spinner's uncle Paul disappeared, and here's what he left: Samantha's sister got a check for $2,400,000,000. Samantha's brother got the New York Yankees. And Samantha got a rusty red umbrella with a tag hanging off its worn handle. The tag says "Watch out for the RAIN." Thanks a lot, Uncle Paul. After all the strawberry waffles, stories, and puzzles they've shared, how could he just leave without saying good-bye? And what is the meaning of that mysterious message? The answer is simple. Sam knows in her heart that Uncle Paul is in danger.

Samantha Spinner's Uncle Paul has gone missing again. But this time, he left behind a yellow mitten and a note: Watch out for the snow! That's weird, especially because they're in Seattle...and it's the middle of summer! Samantha has defeated ninjas, battled clowns, and faced down daredevils. But with the sinister snow, she may have met her math!* A puzzling uncle, a mission to Michigan, and a mysterious mitten. Let's hope Samantha's super-annoying brother can lend her a hand with...the perplexing pants! *That's a super-secret clue.

Fifteen years ago, eight supernatural criminals fled Estero City to make a new life in an isolated tropical hideout. Over time, seven of them disappeared without a trace, presumed captured or killed. And now, the remaining one has died. Left behind to fend for themselves are the criminals’ five children, each with superpowers of their own: Birdie can communicate with animals. Brix has athletic abilities and can heal quickly. Tenner can swim like a fish and can see in the dark and hear from a distance. Seven’s skin camouflages to match whatever is around him. 

For 12-year-old Emily, the best thing about moving to San Francisco is that it's the home city of her literary idol: Garrison Griswold, book publisher and creator of the online sensation Book Scavenger (a game where books are hidden in cities all over the country and clues to find them are revealed through puzzles). Upon her arrival, however, Emily learns that Griswold has been attacked and is now in a coma, and no one knows anything about the epic new game he had been poised to launch.

My name is Chase Cooper, and I'm a 6th grade ninja. It's my first day at a different school and the only person I know is my cousin, Zoe (but she might be a little too cool for me). I was just another scrawny kid until a group of ninjas recruited me into their clan. It was a world of trouble I wasn't prepared for, which is why I kept this diary (or "chronicle" as my dad would call it) - to warn other kids about the dangers of becoming a ninja. They say history is destined to repeat itself...well, not if I can help it.