Witness to a murder on board, Rae and her brother find themselves stuck on a six-week train journey through central Europe, miles away from their hometown of London, England. Forced to endure the long trip with a murderer on board, she finds herself wishing she could return home, even if it means catching the killer herself. However, she soon finds the task challenging when she starts falling more and more infatuated with the young, brooding detective in the carriage next to hers, who seems to know an awful lot about the murder, and even more about Rae's dark past. With her heart toying with her emotions and the constant need to check over her shoulder every five minutes, her list of allies grows thin. Rae must learn who she can and can't trust, and force her past not to catch up with her, while she battles to get what she wants- to return home in one piece. Six weeks, two siblings, and a train journey that is about to change everything. Rae's about to find out who she really is, and exactly what she stands for.