Crabtree Books

Up until this point, Invincible has been working for the Global Defense agency. Fighting their fights, defeating their enemies...now something's not right, Invincible can no longer carry out his orders unquestioned. Now he finds himself up against the very organization he has been working for.

Having your father be the most powerful superhero on the planet makes life interesting for Mark Grayson, but the typical high school senior's life really starts to heat up when he finds himself inheriting his father's powers.