Ten years ago, my boyfriend killed my best friend.

When Micah Wilkes was a senior in high school, her boyfriend was convicted of murdering her best friend, Emily, a star ballerina with a bright future. A decade later, Micah has finally moved on from the unforgivable betrayal and loss. Now the owner of a bustling coffee shop in her small hometown in Pennsylvania, she's happily coupled up with another old high school friend, the two having bonded over their shared sorrow.

But when reminders of her past begin appearing at her work and home, Micah begins to doubt what she knows about Emily's death. Questions raised on a true crime blog and in an online web sleuthing forum force her to reexamine her memories of that fateful night. She told the truth to the investigators on the case, but was there another explanation for Emily's murder? A stranger in the woods. An obsessive former classmate. A domineering ballet instructor. Or the internet's favorite suspect: Joshua, Emily's outcast younger brother who hasn't been seen since his sister's death.

As Micah delves deeper into the case, she feels her grip on reality loosening, her behavior growing more and more secretive and unhinged. As she races to piece together the truth about that night ten years ago, Micah grapples with how things could have gone so wrong and wonders whether she, too, might be next to disappear.