"Supergirl has been running across average citizens performing amazing feats all over National City. But that's not even the weirdest thing going on. The Department of Extranormal Operations has captured a mysterious humanoid sea creature. Supergirl must find out what has drawn him to National City, and his connection to this surge of super-citizens"--Provided by publisher.
Supergirl ; 1
Superheroes -- Juvenile fiction.