After shooting a child killer that was deemed untouchable, Scotland Yard's Albert Tyburn is sent to 1930's Kenya to head a criminal division in Nairobi. He investigates the death of Lady Daphne Ellesmere as a murder even though his boss and the coroner insist she was killed by a lion. Helping him is Daphne's sister, a lovely pilot who refuses to play the social games common in the British expatriate set.