When a sinister substitute teacher takes over their class, it is up to Eugene and the rest of the Sunnyview Superhero Squad to find Ms. Beasley and foil the sub's plot.
- ISBN10 1481458590
- ISBN13 9781481458597
- Publish Date 1 March 2016
- Publish Status Active
- Publisher Simon & Schuster
- Imprint Little Simon
- Format Hardcover
- Pages 128
- Language English