Britain's Most Evil Killers (2017)

S5E5 Sabah Khan

In a chilling tale, a woman becomes consumed by a dangerous fixation on her brother-in-law, leading her to commit the unthinkable act of killing her own sister in a vicious assault. The dark motivations behind her obsession unravel as the story explores the depths of jealousy and betrayal, revealing how a seemingly ordinary family can be torn apart by such horrifying actions.