Season 3 aired between 16 Sep 1990 and 10 Mar 1991, 11 episodes.
Episodes
E01
The Mysterious Affair at Styles
16 Sep 1990
E02
How Does Your Garden Grow?
06 Jan 1991
E03
The Million Dollar Bond Robbery
13 Jan 1991
E04
The Plymouth Express
20 Jan 1991
E05
Wasps' Nest
27 Jan 1991
E06
The Tragedy at Marsdon Manor
03 Feb 1991
E07
The Double Clue
10 Feb 1991
E08
The Mystery of the Spanish Chest
17 Feb 1991
E09
The Theft of the Royal Ruby
24 Feb 1991
E10
The Affair at the Victory Ball
03 Mar 1991
E11
The Mystery of Hunter's Lodge
10 Mar 1991