Agatha Christie Series4 books in series
A Talent for Murder Publisher's Summary
Agatha Christie, in London to visit her agent, boards a train preoccupied with the knowledge that her husband Archie is having an affair. She feels a touch on her back, loses her balance but is pulled to safety from the rush of the incoming train.
So begins a sequence of terrifying events. Her rescuer is no guardian angel but a blackmailer, and Agatha must use every ounce of her cleverness to thwart an adversary determined to exploit her genius for murder to kill on his behalf.