Amelia had merely been in the car with him). Adam was the one driving the car that killed his mother. (Adam's narration reveals that Amelia had been his girlfriend as a teenager, which is probably why she sought him out later. Robin and Adam end up getting back together.

It results in a scuffle where Amelia is (presumably) killed.

In present day, Robin reveals this information to Adam. The letters further reveal that Robin has since learned that Amelia was the one in the car that killed Adam's mother. He and Robin had a bad relationship since he was a bully, but she asked him to let Adam adapt his novels. In another plot twist, it turns out the chapel belongs to Henry Winter, who is Robin's father. He and Amelia married right after the divorce. Amelia was the friend that Adam cheated with. Later, in a big plot twist, we learn that Robin is actually Adam's first wife (all the letters are written by her, not Amelia). The letters culminate in describing how Adam cheated on her with her best friend from work. Meanwhile, interspersed throughout the book are letters addressed to Adam (but never sent) each year on their anniversary detailing their relationship history. At the chapel, Amelia and Adam find there are strange occurrences (thanks mostly to Robin) and power outages. He has reoccuring nightmares about his mother being killed in a hit-and-run accident when he was 13. Adam is a screenwriter who is known for adapting the novels of a writer named Henry Winter. There's also a woman named Robin living in a cottage nearby. The two-paragraph version: Amelia and Adam are on a getaway, staying at an old chapel.

Rock paper scissors alice