Heartwood box

"In this tiny, terrifying town, the lost are never found. When Araceli Flores Harper is sent to live with her great-aunt Ottilie, the plan is simple. She'll buckle down and get ready for college. Life won't be exciting, but she'll cope, right? Wrong. From the start, things are very, very wrong. Her great-aunt still leaves food for the husband who went missing twenty years ago, and local businesses are plastered with MISSING posters. There are unexplained lights in the woods and a mysterious lab just beyond the city limits that the locals don't talk about. Ever. When she starts receiving mysterious letters that seem to be coming from the past, she suspects someone of pranking her or trying to drive her out of her mind. To solve these riddles and bring the lost home again, Araceli must delve into a truly diabolical conspiracy, but some secrets fight to stay buried"--Provided by publisher.