Mission: Impossible (1966) : 7x6

Carl Reid, a Syndicate cocaine distributor, has as his chief supplier Fernando Laroca, and the two of them have created an undetectable series of pickup and payoff locations. They're planning a huge shipment in 72 hours and the IMF must stop them. The IMF set up Reid's lieutenant Conrad to take them to the cocaine, although even he doesn't know where it is. The IMF set up a fake new cocaine organization with Willy as a chemist with a machine that can manufacture cocaine. Conrad makes a deal with them to undercut his boss and sell the cocaine to three big buyers - the IMF steal the money and leave him with fake cocaine, so Conrad kills one of Reid's man to find the real shipment of cocaine - when he finds it the IMF move in and the police arrest everyone.