Episode 7 (S04E07)

Greg MacDonald and his wife contest Archie for the title of Laird of Glenbogle. Complicating matters, the estate now faces a hefty £250,000 debt due to Hector's death duties. To protect Glenbogle, Molly initially consents to marry Kilwillie but soon has second thoughts. This leads to a duel, where Archie emerges victorious. Meanwhile, Irene drops a bombshell on Duncan by revealing she is expecting a child, but insists that he is not the father.