At Oxford University, a professor and a grad student work together to try and stop a potential series of murders seemingly linked by mathematical symbols.

While grieving a terrible loss, a married couple meet two mysterious sisters, one of whom gives them a message sent from the afterlife.

American tourist Frank meets mysterious British woman Elsie on the train to Venice. Romance seems to bud, but there's more to her than meets the eye.

Hoping to put to rest years of unease concerning a past case, retired criminal investigator Benjamín begins writing a novel based on the unsolved mystery of a newlywed’s rape and murder. With the help of a former colleague, judge Irene, he attempts to make sense of the past.

A runaway train, transporting deadly, toxic chemicals, is barreling down on Stanton, Pennsylvania, and proves to be unstoppable until a veteran engineer and young conductor risk their lives to try and stop it with a switch engine.

When a seemingly straight-forward drug deal goes awry, XXXX has to break his die-hard rules and turn up the heat, not only to outwit the old regime and come out on top, but to save his own skin...