Helen Plum Library

When a roamer trades them an ancient book with only a few pages remaining, Lina and Doon return to Ember to seek the machine the book seems to describe in hopes that it will get their new community, Sparks, through the winter

Pat O'Toole, his brother Coop, and their new companion, Kate, have narrowly escaped the cultlike community below New York City but must try to stop the cult's leader, Kate's grandfather

In the underground city of Caverna the world's most skilled craftsmen toil in the darkness to create delicacies beyond compare - wines that can remove memories, cheeses that can make you hallucinate and perfumes that convince you to trust the wearer, even as they slit your throat. The people of Caverna are more ordinary, but for one thing: their faces are as blank as untouched snow. Expressions must be learned, and only the famous Facesmiths can teach...

"It was supposed to just be a normal basement--some storage boxes, dust, you know, the usual basement stuff. But when Milo is sent by his mother to fetch a sock from the basement of the historic home they've moved into, Milo finds a door in the back that he's never seen before. Turns out that the basement of his house is enormous. In fact, there is a whole world down there. As Milo travels ever deeper into the Basement World, he meets the many Things...