Finn and the Time-Traveling Pajamas (The Finniverse series #2) (Hardcover)

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Other Books in Series

This is book number 2 in the The Finniverse series series.

Staff Reviews

"Hybrid creature space cowboys, time travel, hot-dog-serving holograms, a family mystery, an unbeatable villain and three friends on a quest to save the timeline as we know it? All in one book? Yes. Very much yes. This fast-paced adventure from Michael Buckley kept me turning the pages, even after I'd already allowed myself "just one more chapter." It's the second book in this Finn series, but even if you start with this one, you won't feel like you're lost, as he details events from the first book enough to make you feel like you've caught up. But be warned- you will immediately want to pick up the first book and find out what Finn and friends were up to and how they all got together in the first place. If you want a non-stop action time travel adventure story that also has saber tooth cats, sasquatches and dogmen, this is for you."

— From Nicole


From the New York Times bestselling author of the Sisters Grimm and NERDS comes the second book in an action-packed middle grade series with equal parts humor and heart!

When Finn is saved from the Time Rangers by an older version of himself, it comes with a catch. Old Man Finn needs Finn and his friends, Lincoln and Julep, to help him win battles he lost years ago against the Paradox, a terrible creatures obsessed with revenge against Finn's father. If they succeed, he promises to tell Finn where his father is. He even gives them a pair of time-traveling pajamas to help them with their quest.

There's only one problem. The pajamas malfunction almost immediately. Along the way the kids avoid being eaten by sabretooths, shot by revolutionary war soldiers, and start a war with a town full of holograms, all in an effort to fix the jammies.

Just when their goal is in sight, Julep gets sick. doesn't seem like she's sick. It seems like she's changing. The adventure may cost Finn more than an old pair of pajamas--it may cost him his friends!

About the Author

MICHAEL BUCKLEY is the New York Times bestselling author of the Sisters Grimm and NERDS series and the cocreator, writer, and executive producer of Cartoon Network's Robotomy. He lives in New York City.

Visit Michael online at and follow him on Twitter at @michaelwbuckley and on Instagram at @buckleystopshere.

Praise For…

Praise for The Finniverse: 

Amazingly fun…fans will beg for the next volume. A must-buy for middle grade sci-fi fans.”—SLJ

"Buckley (the Sisters Grimm series) spans the galaxy with this humorous story…. An action-packed romp."—Publishers Weekly

“Hold onto your butts as Buckley, author of the popular Sisters Grimm and NERDS series, throws his newest adventure into hyperdrive from page one . . . . Light-speed fun.”—Booklist

“Realistic kids, wild aliens, and unicorns sure to surprise readers add to the fun . . . if the laughs don't keep the pages turning, the action will.”—Kirkus Reviews

"Perfect for Max Brallier and Doctor Who fans seeking an action-packed sci-fi adventure."School Library Journal 

"A satisfying planetary romp, and the promised sequel will no doubt have a crew of fans."The Bulletin 

"Funny and fast-paced."—The Week Junior US

Product Details
ISBN: 9780525646914
ISBN-10: 0525646914
Publisher: Delacorte Press
Publication Date: March 30th, 2021
Pages: 288
Language: English
Series: The Finniverse series