Fact-loving Paige sets out to prove imaginative Penn wrong about aliens in this fourth and final book in the mystery graphic novel chapter book series Paige Proves It!

Paige loves facts! She is constantly spouting information about everything and anything to anyone who will listen. Unicycles are like bicycles but with only one wheel. One of the Morse code systems was named for Samuel F.B. Morse in the 1830s. And a boy named Penn who lives next door to her is her friend.

Penn is convinced a spaceship with aliens is about to land in their neighborhood and Paige is determined—once again—to prove him wrong one fact at a time.