In the Teeth of the Evidence by Dorothy Sayers

This is a collection of short stories by Dorothy Sayers which was published in 1940. It contains two Lord Peter Wimsey stories, five Montague Egg stories and ten stories classified as "other".

I am rather fond on Montague Egg, the traveling salesman for the firm of Plummett & Rose, suppliers of wines and fine spirits and liqueurs. He tends to find crimes as he travels and follows the very good advice which he receives from The Salesman's Handbook such as "Attend to details and you'll make your sale" in solving them. Among other things, Montague investigates a very hirsute professor who is an author of a book on the history of the Christian Church, a torn scrap of paper which might be linked to a murder, and assists the police in the solution of another murder case involving the death of another traveling salesman.

The "other" stories include a impoverished barber who sees that a reward is being offered for information on a criminal, and believes that he will never see this person. Another involves a milkman who becomes worried when nobody takes the milk bottles inside the door after his deliveries. Then there is the playwright whose play is successful but hates the producer for altering his script. Sayers was probably quite sympathetic in the story about an unpublished writer who thinks up an extremely clever way to promote his book with a potential publisher.  

Of course, you are wondering about the title of the book. This is the title of the Lord Peter Wimsey story in which Lord Peter is told a story about a suspicious death while being treated by his dentist. The corpse was badly burned and the identification of the body hinges on its teeth.

I found all the stories in this book to be very enjoyable. This book is currently available in ebook format.