I was fortunate enough to spend time with the author on a training course he provided in the UK. There is no denying the vast amount of knowledge and experience he has on the subject of Fire Investigation, and that knowledge and experience is here, in this book.
You can use it two ways; as a study aide or as reference material. Each chapter has a detailed introduction on the subject matter, indepth analysis, case histories and oodles of data. And at the end of each chapter a summary and review questions.
But as mentioned, it's invaluable as reference. The index is clear with all subject matter in simple english with no overuse of subject specific language.
There is a massive amount of reference publications mentioned for further reading, examples of sketch plans, help on fire scene photography, suggested report formats, unit conversion charts, more material ignition temp charts than you can shake a big stick at and so much more.
This book sits on my office bookshelf alongside the more formal and slightly harder to follow but useful all the same NFPA 921. I always reach for Kirk's when I'm investigating a fire and it stays next to me while I draft my reports.
It's the publication most turn to, and the one accepted at all levels of the legal profession.
The beauty of this book is that the author John DeHaan still teaches and is a regular trainer in the UK with Gardiner Associates, so you'll have the chance to not only read and learn from the book, but get trained by him alongside one of the Uk's finest providers in the field. (No I don't get paid by them, I just happen to believe it!)
If you're going to get one Fire Investigation book, get this one. It does what it says on the tin!