This was a favorite of mine as a child, and I just reread it for probably the fourth or fifth time. The story is about two loners, Teresa and Barnie, who forge an unlikely friendship when they find themselves the target of a bully's rage. Afraid of retribution, they hop on a bus and run away, only to end up at a local shopping mall. The two decide to hide in a fancy department store after the mall closes and spend the night sneaking around, eating out of the deli area, and avoiding the night watchman.
The next day, they hang out at the store, blending in with the crowds, changing clothes for new outfits off the racks, and just basically coming to terms with the thought of living in the store for the rest of their foreseeable futures. Unfortunately, they aren't alone.
Other kids, either runaways like Teresa and Barnie or lost children who wound up at the store, live there as well, pretending to be display mannequins to avoid suspicion. They think Teresa and Barnie are members of a rival gang called Mouth-Breathers, who live in the parking lot outside the mall and constantly try to infiltrate the store. When the Mouth-Breathers break in the night Teresa and Barnie are captured by the others, the timing couldn't be more wrong.
While rereading this story, I remembered why I loved it so much as a child. The thought of being self-sufficient without guidance appeals to preteens eager to be out from under their parents' yokes, but living on the streets is scary and dangerous. Sneaking away to hide in a mall sounds perfect, particularly for kids who are at the age where they prefer to hang out with their friends at the stores rather than stay at home. A department store has everything you'd ever want or need ~ food, clothes, a bed to sleep on, books to read, games to play ... It's a wonderful alternative to running away to be completely on your own.
I enjoyed the idea of the mannequins not so much "coming to life" but rather being more than they seem at first glance. The story is well-written and fast paced, and at the end I found I couldn't put the book down. Despite the fact this was originally published in 1979, it still reads as fresh and relevant today as it did when I first picked it up years and YEARS ago.