"The Girl Who Was Supposed to Die" is a young adult thriller novel by April Henry. The story follows a teenage girl named Cady who wakes up in a remote cabin with no memory of how she got there. She discovers that her life is in danger, and she must escape from her captors while piecing together the mystery of her past. As Cady navigates her way through the woods, she encounters various challenges and meets a boy named Ty, who helps her. Together, they work to uncover the truth behind her kidnapping and the reasons why she was targeted, leading to a suspenseful and gripping conclusion.