All the Missing Girls/Megan Miranda/371 pgs.

Nicolette (Nic) Farrell had left her hometown, Cooley Ridge, right after high school, and right after her best friend, Corinne, had gone missing. It's ten years later, and Nic has established a good life in Philadelphia (fiancé and all), when she receives a letter from her father (who has dementia) that he has seen "that girl." Nic returns to Cooley Ridge to see her father, when another girl goes missing. This is one of those books that will keep you reading into the wee hours of the morning! It is told in reverse order, which makes it all the more fascinating. Highly recommended!