Minnesota Mall Mannequins
This book all took place in a mall in Minnesota. In the mall, the characters went to the bathroom, stores, rooftop, and hallways.
The story is mystery, but it can also be categorized as fantasy. It is mystery because Rachel, Jessica, Riley, and Josh have to solve many mysteries. On the other hand, it is fantasy because none of this could happen in real life.
It was important when Josh cut the antenna so the aliens couldn't transport life to mannequins. Also, it was important when Jessica and Rachel went to the room that had all the humans the mannequins captured. Finally, it was important when Jessica and Rachel found Josh, because he caught them up of what was going on.