I got sent one that did not work. Called customer services who promised me another one in the next post.
Weeks went by still no charger, gave up!
Then after I'd changed jobs they delivered another one to my old work together with a snotty letter asking me to change my amazon review since I really should have contacted customer services first!! You know what? The second one doesn't work either!
However, it is now very out of date. Lots of it remains relevant, but knowing how old it is makes you constantly wary, which negates the whole purpose of this sort of book. Its time they produced a new version. Also a little more for prosecutors would be useful - after all we're the ones with a hundred cases and no prep time!