Series - 1968
- 'The Second Stain' (broadcast 9-Sep-68)
- 'The Dancing Men' (16-Sep-68)
- 'The Greek Interpreter' (21-Oct-68)
- 'The Naval Treaty' (28-Oct-68)
- 'Thor Bridge' (4-Nov-68)
- 'The Musgrave Ritual' (11-Nov-68)
- 'Black Peter' (18-Nov-68)
- 'Wisteria Lodge' (25-Nov-68)
- 'Shoscombe Old Place' (2-Dec-68)
- 'The Solitary Cyclist' (9-Dec-68)