Peggy Rathmann is the author and illustrator of "Goodnight Gorilla-her masterpiece-as well as several other highly acclaimed books (e.g., "Officer Buckle and Gloria," "The Day the Babies Crawled Away"). This book combines a number of familiar motifs: Animals that may or may not be imaginary (visible only to the boy protagonist, but not to his father), counting between 1 and 10, lots of detailed background activity, self-referential humor, fantasy spinning off of the mundane, and an exciting conclusion hinging on whether the boy will get to bed on time.
The surface plot is simple: A father immersed in his paper (with humorous stories on it) announces that it's 10 minutes until the boy's bedtime, and counts down the remaining time each minute. Rathmann takes it much further than this though. For some reason, the boy's real hamster advertises a "10-minute bedtime tour" in the local paper. The hamsters arrival coincides with the 10-minutes in which the boy must get ready for bed. For the rest of the story, the pet hamster echoes the father's countdown, and the guest hamsters follow the boy around as he brushes his teeth, goes on the "potty," reads a story, etc. The echoes reverberate like two facing mirrors. Not only do the hamsters recapitulate the father and son's activities, but also the boy becomes his own doppelganger. He's shown reading a book--this book, "10 Minutes Till Bedtime." On page 22 (four minutes to go), you see him looking over his chair at the scores of newly arrived hamsters in his bedroom, holding this book turned to page 22. More and more hamsters arrive, practically filling the bathtub, and they cluster in groups dancing in hulas, laying in deck chairs, water-skiing, and boating. The whole book seems close to exploding with hamster tourists, until a gigantic shout of "Bedtime!" shakes them off the rafters and out of the house.
This is an ambitious book with mixed results. The illustrations are wonderful, luminous (including the signature lamppost), colorful, and with good separation of foreground and background. Rathmann's pictures of the ever-increasing hamsters are convincing, and their adaptation of human activities (traveling in campers made out of oatmeal boxes, taking pictures, riding a toy train, etc.) is funny and recognizable despite the miniature scale. Still, it's a very busy book, and the crescendo of hamster-mania is not exactly calming (although the humor is). It's also a bit difficult to explain how this all happens. You can either go with the "it's just his imagination" angle, or you can say these are things that only children can see, or you can just ignore plausibility altogether and hope your child does too. What's somewhat more annoying is Rathmann's self-referential humor, especially the commercialization of the gorilla from "Goodnight Gorilla." If fantasies are inherently valuable, then why must we see the gorilla become the doll property of the boy. Moreover, the drawings of this book inside the book also seem unnecessary and contrived. In a way, this repeated product placement feels more like more self-promotion than the clever or sly touches for which Ms. Rathmann is famous.
Overall, if your child enjoys abstract fantasy, animals, and slightly busy books with lots of tiny activities on every page, this book may become a favorite. For me, none of her books rivals the simple, wry humor of "Goodnight, Gorilla." However, Rathmann challenges both herself and her readers with this very interesting excursion. Slightly older kids (say, early elementary school age may enjoy the "Sims"-like quality of the scurrying hamsters, and others may enjoy the "Where's Waldo" detail. There's no trouble finding `Waldo' here: The real or imagined hamsters are here, there, and almost everywhere. The book is nicely produced, with little touches like photos of the "tour" on the inside book covers, and excellent color reproduction.