Monarch of the Glen - Season 1 - Episode 4
A visiting genealogist friend of Hectors discovers a diary which records Katrina's mother, a former servant in the house, as having an affair with someone called ‘H'. Molly is understandably upset by the implications until it is discovered that Katrina's father, the mysterious ‘H' is the genealogist himself.
About Monarch of the Glen

Title: Monarch of the Glen
First Air Date: 2000-02-27
Last Air Date: 2005-10-23
Status: Ended
Rating: 7.5/10 (from 20 votes)
Language: EN
Seasons: 8
Total Episodes: 63
Network: BBC One
Genres: Drama, Comedy
Production Companies: Unknown
Synopsis
Archie MacDonald, a young restaurateur is called back to his childhood home of Glenbogle where he is told he is the new Laird of Glenbogle.
Cast

Richard Briers
Hector MacDonald

Susan Hampshire
Molly MacDonald

Alexander Morton
Golly Mackenzie

Hamish Clark
Duncan McKay

Julian Fellowes
Lord Kilwillie

Lloyd Owen
Paul Bowman-MacDonald

Martin Compston
Ewan Brodie

Rae Hendrie
Jess Mackenzie

Tom Baker
Donald MacDonald

Kirsty Mitchell
Iona McLean