Ladies and gentlemen, I've found it.
I was hitting a stone wall with my novel, which is a mystery/suspense/crime drama/supernatural horror hybrid. I knew what was causing the impasse, too (very reassuring, btw, being able to diagnose the block!). There's a romantic interest between my main character (crime blogger Maggie McCrae) and the federal agent in charge of the case of her missing sister (the point on which the whole story turns). Trouble was, every time I wrote a scene involving the agent, his partner, and his encounters with the small-town police force, the dialogue fell flat and even I couldn't care less about what happened to the characters. The heart of the matter was that I don't understand police procedures well enough to write a convincing story about a missing-persons case in which a crime blogger hooks up with the detective in charge of her sister's case.
So I was trolling around on the Writer's Digest site, and there was the Holy Grail. Hiding in plain sight. It just arrived today.
Police Procedure & Investigation: A Guide for Writers is the book, by Lee Lofland. I can tell at a glance that it's going to solve most if not all of my problems in writing convincingly on the subject. My main sticking point was the interplay of the FBI and local law enforcement in solving a missing-persons case that originates in a small town but soon becomes a serial case that affects an entire metro area. Thanks to Lee Lofland, I'm no longer stumbling around in the dark.
This isn't going to be a novelized CSI or Without a Trace episode: the story is much more about Maddie's relationship with her lost sister, her bumpy romance with Special Agent Rodriguez, and their fight against the criminal mastermind known as The Scorpion.
If you're writing a thriller, a crime drama, or anything that needs realistic touches regarding law enforcement, this book is a must-have for your reference shelf.
Cheers,
WKF