Kirk's Fire Investigation by John D. Dehaan. This, along with the NFPA 921, is the most widely used source for fire investigation techniques. Helpful in understanding the jargon and in testing the investigator's theories. Every fire investigator owns and uses this book. Every lawyer who faces a fire expert in court needs it.

Combating Arson-for-Profit: Advanced Techniques for Investigators, by David J. Icove, Vernon B. Wherry, J. David Schroeder. See the great reviews on Amazon.com. Readers seem to love it. 

I have to admit I haven't read this yet.  If it's half as good as the reviews, we're all missing something.  Another one on the short list.  

GC-MS Guide to Ignitable Liquids by Reta Newman, Kevin Lothridge (Contributor), Michael W. Gilbert (Contributor). One of those science books that you really want now and then. Cheap insomnia cure.

Kennedy on Explosions. An old classic, which certainly deserves a spot in the library. This has been the number one explosion book for years.

Engineering Analysis of Fires and Explosions by Randall K. Noon. Interesting feedback at Amazon. I haven't read it, so no comment here. 

Pseudo-Science

The Adjuster: Making Insurance Claims Pay by Gordon G. Smith. The reviewers at Amazon rave about this book. I would read it myself, but adjusted claims before and during law school, and would rather forget, thank you.

Claim Paid: A Consumers Guide Through the Insurance Claims Maze by Frank R. Dumas. One of those consumer books for clients, or people who try to represent themselves.

 

How to Make Insurance Companies Pay Your Claims and What to Do If They Don't by Ralph Nader, William M. Shernoff, Ruth Chew. Lots of famous authors. Tell me what you think of this one.

Top Dollar Property Claims: Secrets to Successful Insurance Claim Settlements by Les Watrous. How to be an adjuster. Yes, they actually read books. Haven't read this one myself; maybe I will. Then again, maybe I won't.