How will Penny prove that she is a pirate and not a pest? Benny wants to be a brave pirate but it is hard to pretend when his pesky little sister, Penny, is always tagging along. He tries to lose her, but when he does, he starts to feel a little lost himself.

Theodor Seuss Geisel Award Winner

Benny and his sister Penny know it’s wrong to sneak into someone else’s backyard but their mysterious new neighbor—or is it a monster?—may be a thief. They go snooping and discover a lot about themselves and…a new friend.Bestselling children’s artist Geoffrey Hayes enchants early readers with his charming and subtle storytelling. In this lively caper, the artist’s small-scale mice take on large-scale issues with enormous comics mastery.

It’s nearly time for lights out but Benny and Penny just can’t settle down. The moon has gone missing, there’s a flashlight to play with, Benny can’t sleep without his favorite pirate hat—and he left it inside the spooky backyard playhouse!

Geoffrey Hayes, winner of the Geisel for Benny and Penny in the Big No-No!, tells the story of two tiny mice who learn what it takes to be a leader. School Library Journal declares, "Once again, Hayes has created a graphic novel that is inviting, relatable, but, most importantly, fun."