Summary from Goodreads
Samantha Carter believes that a vampire is responsible for the brutal deaths of four women in Whitechapel, London, England. Each murder is identical to those committed a hundred years before by a very different serial killer.
Desperate to prove the killer’s identity, Samantha follows him onto a late night tube train. But Samantha doesn’t reach the next station and finds herself on a very different journey, where she discovers vampires are very real and far more dangerous than she had ever imagined. To stay alive, Samantha needs to figure out why things have gone so terribly wrong for her – and more importantly, why she is out of time?… Read more >>>