Michael Connelly introduces a new detective, and reviewer Bob Moyer is on the case. Reviewed by Robert P. Moyer NIGHTSHADE. By Michael Connelly. Little, Brown. 241 pages. $30. He’s not like Harry Bosch, Michael Connelly”s hard-boiled, hard-bitten ex-LAPD detective, who drives an old jeep around, drives women away and lives on a downtown hillside. Los…