All 6 seasons are available for streaming on Amazon...They (with Michael Connelly's approval) updated the character a little to meet the times...instead of having served in Vietnam as a "tunnel rat" (small guy)...the character played by Titus Welliver served in the Gulf...
...Connelly has a hand in the writing/production of the series which makes it that much better...
I signed up for my free month of Prime and just started watching... thanks again for pointing it out. Usually a movie made from a book leaves a lot to be desired but they did a good job on this... right down to Bosch's home on the hill overlooking the city. It will be interesting to see how much it follows the book... at one point his place was condemned because of earthquake damage but he snuck home every night anyways.