Powerful and thought-provoking drama which tells the compelling true story of Janet Leach who played a crucial part in uncovering the shocking crimes of Fred and Rosemary West - two of the most notorious serial-killers in history. Featuring electrifying performances by Emily Watson (as Janet Leach) and Dominic West (as Fred West), it reveals the extraordinary relationship which developed between the two, as West tried to evade responsibility for his crimes and protect his wife Rosemary from justice.