S1 E13 ∙ Grandma's Revenge ∙
When 71-year-old Colleen Harris discovered her husband Robert was having a long-distance affair with a 35-year-old woman in Mongolia, she decided to teach him a lesson.
G
Contains Strong Language and Mature Themes
All episodes for series 1 of I Knew My Murderer
S1 E1 · Theatre of Blood
Professor George Zinkhan murders his wife, her lover and other members of their theatre troupe.
S1 E2 · Professor of Death
Brilliant neuroscientist Amy Bishop shoots three colleagues when she is denied tenure.
S1 E3 · Murder in Miami
Failed self-help guru Derek Medina shoots his wife and posts pictures of her body online.
S1 E4 · The Stiletto Killer
Ana Trujillo bludgeons her on-again-off-again lover Stefan Andersson to death with a stiletto.
S1 E5 · Killer with a Badge
Failed patrol officer Tracy Fortson shoots her boyfriend as he sleeps.
S1 E6 · Lesbian Love Triangle
Nicole Abusharif murders her wife Rebecca Klein for the insurance money.
S1 E7 · Bloody Birthday Cake
Law student Adrienne Hickson fatally stabs her boyfriend Shawn Washington with a cake knife.
S1 E8 · Killer Cat Fight
Teenager Rachel Wade stabs Sarah Ludeman to death over a boy.
S1 E9 · The Not-So-Good Wife
Seemingly submissive wife Mary Winkler takes fate into her own hands and murders her husband.
S1 E10 · Dinner Theatre Death
Kimberly Hricko takes her husband on a murder mystery weekend - where he's the victim.
S1 E11 · Murder Under the Christmas Tree
Patty White attempts to rob former flatmate Michele O'Dowd.
S1 E12 · Shot in the Back
After years of physical abuse, a couple take a dangerous turn in their relationship.
S1 E13 · Grandma's Revenge
71-year-old Colleen Harris discovered her husband was having a long-distance affair with a 35-year-old woman.
S1 E14 · Then No One Can Have Them
Adam Mayes' best friend has two young daughters - with whom Adam has a twisted obsession.
S1 E15 · Killer Assistant
A celebrity real estate broker's personal assistant is caught stealing - with deadly results.
S1 E16 · Black Widower
Over the course of two decades, Robert Spangler strove to free himself from marriage and children.
S1 E17 · She Killed for a Sex Change
Nicole Vonlee Titlow made a deal with the wife of a 74-year-old millionaire with eyes on the inheritance.
S1 E18 · Black Widow
Betty Lou Beets was convicted of shooting her fifth husband in August 1983.
