Con Mum is a 2025 British documentary film directed by Nick Green. The 90-minute feature chronicles the true story of Graham Hornigold, a celebrated British pastry chef, who was defrauded of nearly £300,000 by a woman, Dionne Marie Hanna, who claimed to be his mother. It was released on Netflix on March 25, 2025.

Plot

In 2020, Graham Hornigold, a London-based chef received an email from Dionne Marie Hanna, a woman claiming to be his biological mother. Hornigold, born in 1974 on a British Army base in Germany and raised by his father and later in foster care, had always yearned to know his mother. Dionne presented herself as a wealthy businesswoman with connections to Southeast Asian royalty, specifically claiming to be an illegitimate daughter of the Sultan of Brunei. She lavished Hornigold, his pregnant partner Heather Kaniuk, and their friends with extravagant gifts, including cars and luxury hotel stays, while promising a multimillion-pound inheritance.