I picked up a copy of "Deadly Force Encounters, Second Edition" by Artwohl & Christensen recently. While not a 'can't put it down page turner', it's well worth the $25. Chock full of relevant information and profusely footnoted so you/your attorney can get the source material for certain things that might help your case. Also a lot of information on how to avoid needing the information.

If you're looking for 500 pages of "There I/we was.......", this isn't a book for you.