M G Eberhart 
The Cases of Susan Dare 
Penguin #523 1947 

First Penguin paperback.  

A mystery author finds her knowledge of murder put to practical use. Inside the lovely head of Susan Dare, grisly murder lurks. A mystery author who makes her living providing tidy solutions to imaginary crimes, Dare is enjoying a much-needed vacation when the mood at her host’s house turns sour. Ugly secrets lurk in the Frame family’s past, and jealousy stirs beneath the surface of their tranquil country estate. Dare makes plans to leave before her hosts turn on each other, but she is too late. On the morning of her departure, a gunshot echoes through the fog. Only a beautiful author with a head full of murder mysteries can pinpoint the killer.

The book is in good condition, generally clean, paper is browned. The spine edges are damaged but the book remains intact. Internally the book is clean, free of markings and foxing. Previous owner's address label on the title page.