| Killer in the Family explores some of the most shocking and puzzling family murder cases of recent years. Laura Richards, a leading criminal psychologist responsible for setting up the Homicide Prevention Unit at New Scotland Yard, is on a mission to uncover the early warning signs displayed by killers, and help prevent future tragedies. |
| Name | Character | Episodes |
|---|---|---|
| Alexis Bledel | Natalie Dunne | 6 |
| Lucy Hale | Melissa Dunne | 6 |
| Ashley Benson | Katie Dunne | 6 |
| James Denton | Brian Dunne | 6 |