I always knew author Jacquelyn Mitchard as an adult author. This book, The Midnight Twins, is her first young adult book.
Can you imagine being a twin, but not sharing the same birthday....or even the same birth year? That is exactly what happens to the Brynn sisters -- Meredith and Mallory. One is born on December 31 and the other 2 minutes after midnight on January 1. It makes for an interesting story. Their personalities are very opposite, but they share many things -- including a "secret" twin language.
On another New Years Eve - the eve of their 13th birthday there is a terrible fire. One of the sisters is left with a scar on her hand. For the first time, the twins are not identical. The fire does more than just physical damage. The girls no longer share dreams. Mallory starts to dream about future traumatic events and Meredith past events. They will need to put their dreams together to solve a mystery.