I remember watching this as a teenager and thought it was really very good. In retrospect, it still is! Edward Woodward in the series long before The Equaliser (a watered down type of US show) gives a credible performance of Callan. It is reminiscent of The Ipcress File style and all the characters are well crafted. Russel Hunter as Linely the slightly freaky, weird unwilling accomplice with his Taxi as a cover is just superb. went on for four years and spawn a good movie. Spying in those days was a dirty game but one seemed to know who the enemy was most of the time. Today, one has no idea. Would like to see some reruns.
