The Big Sleep & Farewell, My Lovely by Raymond Chandler

For wise-cracking Private Eye Philip Marlowe, murder is all in a day's work... 

There are no streets meaner than those of L.A.'s underworld - but luckily one detective has more than his fair share of street smarts. Here, in the first two novels featuring the immortal creation Philip Marlowe, we see the cynical sleuth taking on a nasty case of blackmail involving a Californian millionaire and his two devil-may-care daughters; then dealing with a missing nightclub crooner (plus several gangsters with a habit of shooting first and talking later).