Mortal remains

"Though her classmates call her Morticia and Ghoul Girl, Lily actually likes her work, the dead are good listeners, and they don't judge. Lily learns their stories, shares her worries with them as she makes up their faces, and embroiders pillows for their final rest. Then, after a mysterious explosion burns down a neighborhood house long the source of weird stories, Lily and her friends poke around in the debris and come across the hatch to an underground vault. Inside, they find an injured teenage boy who has been trapped there for days. He has little memory of his life before the explosion and speaks in an odd, stilted manner that suggests limited interaction with the outside world. Yet the boy, Adam, feels there is something familiar about Lily and Lily must admit that she feels a strange connection to him as well"--Adapted from publisher description.