I've entered The Rap Sheet's Mike Hammer Contest with a list of my four favorite P.I. novels of all time. They are, in alphabetical order:
The Maltese Falcon by Dashiell Hammett
Blunt Darts by Jeremiah Healy
Promised Land by Robert B. Parker
No Colder Place by S.J. Rozan
Click the link above to find out how to send your entry by midnight Pacific May 21.