'Saber of London' was the follow up series (US 'Detectives Diary') starting at episode 66 'The Captain and his Killers' but Judy had gone and Michael Balfour was replaced by Canadian Neil McCallum as Pete Paulson. This started on ITV on Monday Nov 16th 1959 and ended with episode 90 'The Visitor' on Monday May 16th 1960. In episode 91, Neil McCallum was replaced with assistant Larry Nelson played by Gordon Tanner but he only lasted to episode 104 'Field Goal' broadcast on Monday June 20th 1960. Robert Arden took over as Bob Page in episode 105 'A Toast To Death' and stayed with the series until episode 142 'A Date with Trouble' (never shown on ITV London).