All Mystery/Suspense/Thriller Writers MUST Read

If you have any intention of including guns in your writing, or including cops in your writing, or criminals, or any combination of the above: read Lee Lofland's post on the correct way to write about guns. Click here: Handguns: You're Still Writing them Wrong. Yeah, You!
And if you're really interested in getting all the police references right, buy his book, Police Procedure and Investigation. It is not only a good read, but invaluable to all crime and detective novelists.

Go forth and learn!