The Boomerang Clue
by Agatha Christie
5 out of 5 stars

(also published as “Why Didn’t They Ask Evans?”)
Bobby witnesses the death of an unknown man, and hears his last words, “Why didn’t they ask Evans?” Bobby thinks nothing of it, until he is poisoned days later. The words must have some meaning. Why else would someone try to kill him? His childhood friend, Lady Francis, is intrigued by the mystery, and agrees to help Bobby track down those involved in the stranger’s death. They are surrounded by suspicious characters and possible enemies. Just when Bobby and ‘Frankie’ think they know who to trust, they are betrayed by the last person they suspected, and their lives are in danger every minute.