The Drop By Michael Connelly Little brown & Co, $27.99, 388 pages, ISBN 978-0-316-06941-0 The Drop is the kind of novel other writers wish they could write.  Although it is his 27th, most of which have featured the hard-driving Los Angeles detective Heironymous “Harry” Bosch, each and every one stands on its own.  The character remains fresh.  By that I mean Connelly’s plots are always new, and never formulaic.