"From T. Kingfisher, the award-winning author of The Twisted Ones, comes What Moves the Dead, a gripping and atmospheric retelling of Edgar Allan Poe's classic "The Fall of the House of Usher." When Alex Easton, a retired soldier, receives word that their childhood friend Madeline Usher is dying, they race to the ancestral home of the Ushers in the remote countryside of Ruritania. What they find there is a nightmare of fungal growths and possessed...

A mold problem at Nathan's school forces his class to share a space with first and eighth graders including Rodney the bully's older brother. Meanwhile, Nathan notices that a putrid smell is following him around and tries to discover its source.

When messy Wayne goes away to camp, his younger brother Jeff throws out some old food containers that he finds in their room, but then he learns that Wayne is working on a science project about mold, and he must try to recreate the experiment before Wayne gets home.