[Name] is tired of her fiance's infidelity. When his recent mistress admits the truth to her -- she calls off the engagement. In hopes of beginning afresh, she boards the Kinsington Express. Only now, she's in a far more alarming position than before. There's been a murder on board, and with the assistance of fellow passengers, she's now on her way to uncover the murderer and the motives behind the crime. Though, why is the detective so enamoured by her?!