A tender and heartfelt queer YA novel about the multiplicities of grief, deeply held family secrets, and finding new love.

It's been exactly four years since the Big Bang in Isaac's life. The cataclysmic event that broke his family into so many shards, it seems impossible they will ever fit together again, especially without their missing piece-Isaac's twin brother Jacob. Partners in everything, Isaac's connection to Jacob has been unbreakable and even after his death, Isaac sees his twin's spirit around all the time. To others this might be unbelievable but for Isaac, talking to his brother's ghost is as natural as breathing. Then, on their eighteenth birthday, Jacob gives Isaac a warning. Something bad is happening to Jacob and if Isaac doesn't figure it out soon, Jacob's time as a ghost will be over and he will be gone forever.

To keep Jacob's ghost with him and in hopes of knitting his family back together again, Isaac decides to find the first piece of their family that went missing-their dad. As Isaac traces his family's forgotten past, he uncovers letters from his father during the weeks leading up to the Compton's Cafeteria Riot in San Francisco, a precursor to the Stonewall Riots a few years later. As family secrets are revealed, Isaac must navigate his own changing feelings and finally face his grief head-on as he comes to realize that time, distance, and even death have no bearing on our missing pieces as those we love will always be a part of our being.