Edward Woodward played the main character, McCall, an ex CIA man. When he retired due to him having had enough of the Special Services, he thought he would do good to right what he had wronged.
He advertised in a newspaper his services for those in trouble and would normally be fighting off drug dealers, racketeers, crooked cops and suchlike. The Equalizer had help from his friends like Mickey Kostmeier, played by Keith Szarabajka.
The most memorable part of the Equalizer series (which ran for 5 years and at total of over 80 episodes) was the musical title sequence. The music was written and played by Stuart Copeland (ex Police drummer). The title sequence is dark and very characteristic of 1980s New York.