Dead As They Come

When Donald Lawson, successful mystery-story writer, is murdered, suspects include almost everyone who ever knew him. He was a man who had no friends and deserved to have none. After his death, it was discovered that he had abandoned his wife, betrayed his friends, and double-crossed every human being he had ever encountered.

The only one who ever had a kind word for him was his editor, Molly Mellinger, supposedly the number one mystery editor in New York. It is she who helps Detective Boos of the New York Police Department track down every clue and muddle through to a solution—but not before there is another murder.
Suspects
Complications pile up endlessly, and Molly herself is in deadly peril before the surprising solution is reached.