This is a collectible Power Pack comic book from Marvel Comics, issue number 31, published in August 1987. The story title is "Crack Down!" and it features Julie Power, Katie Power, Power Pack, Jack Power, and Alex Power in an action-packed adventure. The comic is a first printing and is in the format of a single issue.

The comic has a color style and features artwork and writing from Jon Bogdanove, Louise Simonson, Carl Potts, John Figueroa, and Hilary Barta. The cover art is also by Jon Bogdanove and Hilary Barta. This is a vintage comic from the Copper Age (1984-1991). It is a great addition to any collection of US comics, especially for fans of Power Pack.