one, two, buckle my shoe agatha christie

The dentist was found with a blackened hole below his right temple. A pistol lay on the floor near his outflung right hand. Later, one of his patients was found dead from a lethal dose of local anaesthetic. A clear case of murder and suicide. But why would a dentist commit a crime in the middle of a busy day of appointments?

A shoe buckle holds the key to the mystery. Now—in the words of the rhyme—can Poirot pick up the sticks and lay them straight?

This title was previously published as The Patriotic Murders and An Overdose of Death.