NEW YORK TIMES BESTSELLER WALL STREET JOURNAL BESTSELLER “Sprint offers a transformative formula for testing ideas that works whether you’re at a startup or a large...

Wizard's private eyes don't want any girls in their clubhouse. But a funny little man double-crosses the boys with a message in code. Then Marigold and her girlfriends get to show...

It's Splat's first day of school and he's worried. What if he doesn't make any new friends? Just in case, Splat decides to bring along his pet mouse, Seymour, and hides him in his...

When Splat's teacher announces that the whole class is going to sing for their parents on Parents' Night, Splat is worried: he's afraid to speak in public, much less sing in...

The four members of the Private Eyes Club—Skinny, Wizard, Snitch, and Tubby—solve the baffling case of the missing cat.

It's Valentine's Day and Splat has a special valentine for a certain someone in his class. Her name is Kitten, and Splat likes her even more than fish sticks and ice cream. But...

Splat is really excited about going camping—until his mom tells him she has invited his rival, Spike. Will Spike ruin Splat's trip?In this easy-to-follow story about an...

It's the night before Christmas, and Splat wonders if he's been a good enough cat this year to deserve a really big present. Just to make sure, he offers some last-minute help to...

Two boys. Two balloons. Each boy thinks his balloon is best. What do you think?

It's Halloween, and Splat is determined to be the scariest cat in the class. Unfortunately he's just too much of a scaredy-cat. He's afraid of a little spider, and everyone says...