The Deep by Alma Katsu

An inventive retelling of the events aboard the sinking of two famous ships - the Titanic and the Britannic plus the addition of a sinister supernatural presence. Young Irish Annie Hebbley signs onto the Titanic's staff as a first-class stewardess giving her access to all the well off families who are staying on the top decks. She becomes interested in one young family with a baby and is alarmed by what she feels is an evil presence on the ship. When tragedy strikes she is able to save her young charge and herself. Years later Annie finds herself working on a medical ship that is transporting wounded out of Europe. She is amazed to discover that the young husband is one of the wounded but he is not happy to see her again and the spirit seeks to take over again. This is a well-crafted tale that blends real-life events with the author's flair for the supernatural and dark elements creating the perfect mix of historical fiction and horror. This book will also appeal to the young adult market.