Forty-two passengers. One of them is a serial killer.
When Holly finds a phone with pictures of murdered women on it on a bus to Miami, she realizes that one of the passengers is a serial killer. A game of cat and mouse begins after the owner of the cell sends Holly a message saying that he wants his phone back.
Holly's shocked to find out that the killer knows her name and address.
She races against time as she and her fellow passenger Nick Hayden try to figure out the identity of the owner of the phone. When he murders a young woman during one of the stops, Holly fears he’ll kill her before the end of the day.
Her chances of survival aren't good: the killer has a partner, who is as ruthless and twisted as he is.
You'll never guess who the real killer is.