Watch Online Free on Watchseries. In the spring of 2013, 31-year-old mother of two, Joanne Dennehy, embarked on a murderous rampage that would leave 3 men dead and 2 others fighting for their lives. She was only the third woman in the UK to ever be handed a whole life sentence; joining Myra Hindley and Rose West as one of the most notorious British female serial killers of all time.