In December 1926, Roger helped host Clemency's party with honoured guest Agatha Christie. The murder of their friend Professor Gerald Peach led to the Tenth Doctor and Donna Noble's investigation. This forced Reverend Arnold Golightly to reveal himself as Clemency's long-lost son; he was drowned by Donna. The investigation ended with the only heir to their fortune being murdered by his half-brother. (TV: The Unicorn and the Wasp)