The murder that sparked a courtroom drama worthy of an Oscar: Widow of legendary film critic Derek Malcolm - who drank with John Lennon and befriended Christine Keeler - reveals how his most sensational tale was the crime of passion in his own family
Douglas Malcolm, who Derek once believed to be his father, returned from war in 1917 to discover his wife in love with another man, before taking a horsewhip and a pistol to shoot him dead.