Hertz to Be a Hero — Bryan Davis

Hertz to Be a Hero is an exciting good-versus-evil battle between a brother-sister superhero team and the evil Mephisto. It is book #2 in the "Wanted: Superheroes" series. The evil Mephisto is still on the prowl, and he hopes to bring the city of Nirvana to its knees by controlling its people with a hypnotizing gas. Now that Damocles, the great superhero, is gone, who can stop this villain? Eddie Hertz, a twelve-year-old genius, and his sister, an eight-year-old super-powered girl named Samantha, have a plan-lure Mephisto into a trap by using themselves and Eddie's superhero invention as bait.