With her world crumbling in the face of a divorce and her daughter's estrangement, Eden Miller reaches out on social media to a former college crush who knows far too much about her life.

This wonderous guide for the curious introduces eighteen hidden places and the eccentric and obsessive minds that created them, such as a chamber of skulls high in the Swiss Alps, a Japanese temple full of traps and a spooky "initiation" well in Portugalbuilt by a secret society.

"Years after a breakdown and a diagnosis of dissociative identity disorder derailed her historical preservationist career, Kenetria Nash and her alters have been given a second chance they can't refuse: a position as resident caretaker of a historic home.Having been dormant for years, Ken has no idea what led them to this isolated Hudson River island, but she's determined not to ruin their opportunity. Then a surprise visit from the home's conservation...

"Lucy and her husband, Adam, have been best friends with another couple, Cora and Scott, for years. The four are practically family at this point--they vacation together, co-own a beach cottage, and their young children are inseparable. So Lucy is devastated when, while looking at a colleague's photos of a trip to the Maldives, she spots a picture of Scott, apparently on a luxurious holiday with another woman. Lucy is determined to protect her best...