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The show tells the story of the horrific death of 20-year-old Iraqi Kurdish muslim Mahmod - which sent shockwaves through Britain as it hit the headlines in 2006.
Arranged by her father and uncle after she left her abusive husband and fell in love with another man - Rahmat Sulemani - the two part series is a dramatic retelling of her "honour killing".
In one particularly gut-wrenching scene, investigator Det Supt Caroline Goode, played by Keeley Hawes (of Bodyguard fame), discovers what happened to the victim.
Learning Mahmod was raped and tortured before her death, and also discovering that the local community had failed to protect her from her fate, the on-screen detective was disgusted and shaken to the core.
And so were viewers at home, who watched in utter disbelief, despite already knowing the honour killing victim's fate.
"Banaz Mahmod I am sickened and saddened with what they did to you I am so glad they faced Justice and we know their names, sick b******s may they rot in hell #Honour," one viewer penned on Twitter after watching the drama.
Meanwhile, another added: "This is a very hard watch, but a important watch. This poor woman was failed on all levels; by the police, the community and her own family. This evil practice is still prevalent and needs to be eradicated #honour#itv#honourkillings#BanazMahmod "
A third wrote: "I'm watching #Honour on ITV and I'm all teared up man. It's so upsetting. Banaz Mahmod was failed in the worst way and now she's no longer here. This is why I feel so strongly about domestic abuse. It's NOT a joke."
In the aftermath of Mahmod's death, the Independent Police Complaints Commission found that she had been let down by police, and ultimately they may have been able to save her.
Hawes' character, Detective Chief Inspector Caroline Goode, was given the Queen's Police Medal after investigating the young woman's disappearance in the wake of her colleagues' failings.
Written by Gwyneth Hughes (Vanity Fair, Remember Me) the show not only depicts the tragedy that happened to Mahmod, but follows Goode's relentless pursuit of the truth.
On her hunt for answers, Goode discovered that Mahmod had been in touch five times expressing fears for her life.
Horrified that her colleagues could miss such vital warning signs, the detective then set out to obtain justice by any means necessary.
Honour episode 1 is available to watch now on ITV Hub. Episode 2 airs tonight at 9pm on ITV and later drops on ITV Hub.
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