By day, she's Mrs. Mallowan, hospital pharmacist. By night, she's Agatha Christie, queen of crime. Doing her part for the war effort, Agatha dispenses medicine in shell-shocked London. But the world's most renowned mystery writer is troubled. Compared to the horrors of World War II, her detective novels seem trivial and quaint. When a Jack the Ripper-style murderer strikes, Agatha lobbies her friend, forensics expert Sir Bernard Spilsbury,...