Superheroes Gordon Blue and his brother Benny must rescue an opera star from the evil Dr. Screech before he turns her super high voice into a supersonic weapon.

Cyndi Marko writes and draws books for kids, but she doesn't mind if adults read them, too. Cyndi is the author and illustrator of the Kung Pow Chicken early chapter book series, This Little Piggy: An Owner's Manual and Boo! Hiss! early chapter books, and the Sloth Sleuth middle grade graphic novel series. She currently lives in British Columbia, Canada, with her two noisy, freeloading roommates Cathulhu and Salem P. Cat.