In this bedtime book, a Supergirl fan tries to settle into sleep while Supergirl tracks down an adversary. As the two of them put their shared superhero traits of bravery, persistence, and patience to work, they'll both turn their nights into sweet successes.-- "Book Riot"

The words are sparse but pack a punch, and the images are colorful and action packed, making this book--like the rest of this superhero series--feel like a perfect introductory graphic novel for picture-book readers. A guaranteed bedtime favorite for your little supersleeper, and as admirably diverse as the rest of the series, this promises to be every bit as popular as its predecessors.-- "Booklist Online"