The depraved crimes of both real and imagined serial killers and mass murderers have long transfixed us in newspapers and books, but perhaps nowhere more so than on the big screen.

Films such as Silence of the Lambs, Psycho and Henry: Portrait of a Serial Killer have not only reached huge audiences but also allowed us into the minds of society's most disturbed individuals.

Bestselling author, Christopher Berry-Dee, talks to the serial killers whose wicked stories have most thrilled and fascinated us at the movies and, through far-ranging and disturbing interviews, he tells the stories of the mass murderers who provided the inspiration for some of cinema's most shocking films.