The Sinclair family of Massachusetts is a family of immense privilege; they have the looks, athleticism, and "old money" wealth. The novel is narrated by Cady Sinclair Eastman, the oldest grandchild and young heiress who "summers” every year on Beechwood, the Sinclair's own private island off the coast of Cape Cod. Cady, along with two of her cousins and a friend whom Cady finds herself increasingly drawn to, call themselves Liars. Cady's memories can’t be trusted due to a head injury she suffers the summer she is fifteen. The real crux of the story is her piecing together those memories two years after the accident. The Sinclairs appear to lead a fairy tale life, but don’t be fooled. We Were Liars by E. Lockhart startles readers with an ending most won't see coming!