The Truth About the Harry Quebert Affair by Joël Dicker

The protagonist, Marcus Goldman, is a successful young novelist who needs inspiration for his next book. Marcus heads to New Hampshire to stay with his college professor, Harry Quebert, to focus on his writing. When the body of Nola Kellergan is found 33 years after she went missing and Quebert is accused of her murder, Marcus works to uncover the truth. The result of his investigation becomes his next book.

This was an amazing read with a surprising twist at the end. Highly recommend!