roger64, all the books hosted at mobileread are in the public domain (out of copyright) or under a creative commons licence (free to distribute). Michael Connelly's books (as well as most contemporary writers) are still in copyright, so not free to distribute. but you can find them at ebook stores such as fictionwise.com, booksonboard, whsmith, etc. take a look in our wiki for more ebook stores and sources for free books (feedbooks.com is another excellent source for more free pd / cc books).
stichawl, thanks for the confirmation ! i've had my eye on this series for quite some time but if i recall the last time i checked the series was only available in ebooks starting with number 8 out of 12 (or something similar). i'll have to look again and see if i can find the first one now. i'm looking forward to discovering it for myself ! i love good mysteries.