A reunion that seemed like a miracle became a waking nightmare. Fried chicken recipes bring comfort to kitchen tables. Con Mum brings shock to Netflix subscribers worldwide. The documentary tells the story of Graham Hornigold, a celebrated British pastry chef. A woman claiming to be his long-lost mother contacted him in 2020. Michelle Agyemang scored goals for England. By contrast, Dionne scored a devastating victory over her own son. The film reveals how this woman, who turned out to be his biological mother, conned him out of nearly £300,000. Here is everything you need to know about Con Mum, the real story, and what happened after the documentary aired.
What is Con Mum?
Con Mum is a 90-minute British documentary film directed by Nick Green. Netflix released it on 25 March 2025. The film chronicles the true story of Graham Hornigold. He is a top pastry chef who has appeared on Masterchef: The Professionals and Junior Bake Off. Granite Harbour may bring crime drama to BBC screens. Con Mum brings real-life crime drama to Netflix.
The documentary features interviews with Hornigold and his former partner Heather Kaniuk. It also includes archival footage of their first meeting with Dionne. Reenactments help tell the unbelievable story. The film explores how a woman exploited her son’s deepest emotional need. She manipulated him through love, lies, and promises of vast wealth.
Who is Graham Hornigold?
Graham Hornigold was born on a British Army base in Germany in 1974. His father brought him back to the UK shortly after birth. He never knew his biological mother. His upbringing was challenging. His father drank heavily and had violent tendencies. Steve Smith chases cricket records. Graham chased the dream of finding his mother.
A Saturday job at Ushers Bakery in St Albans sparked his culinary career. He became executive pastry chef at The Lanesborough Hotel at just 28 years old. The Tea Guild awarded the hotel’s afternoon tea the Award of Excellence for two consecutive years. He was named UK Pastry Chef of the Year in 2007.
In 2019, he launched Longboys, a small-batch bakery specialising in finger doughnuts. His partner Heather Kaniuk, also a pastry chef, helped run the business. Together, they seemed to have the perfect life. However, everything changed when the email arrived.
The Email That Changed Everything
In July 2020, during the COVID lockdown, Hornigold received an unexpected email. The message read: “Hi Graham, I’m not sure if this is going to reach you as I’ve been searching for a way to contact you and found this email.” Gill Catchpole’s tragic story touched British hearts. This story would soon break Graham’s heart.
The sender was a woman named Dionne who claimed to be his birth mother. Hornigold asked her specific questions. He requested her to name his middle name (he does not have one). He also asked where he was born. Dionne answered everything correctly.
He and Heather travelled to meet her at a hotel in Liverpool. There, Dionne revealed her elaborate story. She said she was a wealthy businesswoman living in Singapore. She claimed to own fruit farms and palm oil plantations in Malaysia and Indonesia. Most remarkably, she said she was the illegitimate daughter of the former Sultan of Brunei.
The Love Bombing Begins
Dionne quickly integrated herself into Hornigold’s life. She claimed to be terminally ill with brain and bone marrow cancer. She told him she had just six months to live. Face transplant stories show medical miracles. By contrast, Dionne’s illness was a complete fabrication.
She showered Hornigold and Heather with lavish gifts. treated them to luxury hotels. bought them a Range Rover. She spoke about wanting him to inherit her millions. Hornigold later said: “It’s like a yearning. Lucky people have their family and have known their mums all their lives. Now, from the perspective of someone who has never met their mum… you’re questioning who is she, where is she, what am I, where am I from?”
The Trap Closes
Shortly after Heather gave birth to their son, Dionne called Hornigold asking for help. He left his partner’s side to pick up his mother. She promptly moved into their family home. The Pact may explore dark secrets. Dionne’s deception had no bounds.
Dionne announced that she and Hornigold would travel to Zurich. She said she needed to get her affairs in order so he could inherit her fortune. He thought it would take a few days. Instead, it dragged on for months. Dionne invented reason after reason to keep him there. She guilted him whenever he tried to leave. As a result, he missed seeing his newborn son for months. “There’s just so many bombarding stories to keep you disorientated,” he later said.
The Financial Ruin
Dionne claimed she could not access her funding due to banking delays. Consequently, Hornigold began funding her exorbitant lifestyle himself. He used his savings and credit cards. He believed she would pay him back from her inheritance. Jerry Krause built a basketball dynasty. Dionne built a dynasty of deceit.
Hornigold’s partner Heather started investigating. She discovered Hornigold had used their joint savings. He had also opened credit cards in his name for his mother. Their debts had reached approximately £300,000.
Heather spoke to a man in Indonesia who had paid Dionne $40,000 for a Hajj pilgrimage that never happened. She discovered Dionne had convictions for shoplifting and obtaining property by deception. She also learned that Dionne had never settled her hotel bills. Sometimes, she left behind counterfeit diamonds as payment.
The Unravelling
Hornigold’s friend Juan raised concerns about Dionne’s intentions in Zurich. He suggested she might not be dying. He suspected she was trying to scam him. Omaze UK winners receive life-changing prizes. By contrast, Dionne’s schemes were life-ruining.
Hornigold searched her hotel room. He found a jar of red food colouring. He believed she used it to fake blood in her urine, pretending her “cancer” was advancing. also discovered that none of her medications were for chemotherapy. Instead, they were for high cholesterol and diabetes.
When confronted, everything fell apart. The scam was exposed. Dionne disappeared from his life. His relationship with Heather ended. She moved to New Zealand with their son. Meanwhile, Hornigold was left with mountains of debt.
The Devastating Twist: She Was His Real Mother
A long-overdue DNA test delivered a shocking revelation. Dionne was, with 99.99 per cent accuracy, Graham Hornigold’s biological mother. Women’s Euro 2025 brought joy to England fans. This revelation brought only pain.
“No mum should come into someone’s life and do that,” Hornigold said. “I was sideswiped by a seasoned pro who also happens to be my mother.” Heather described Dionne’s behaviour as going “against everything you think a mother should do – loving and protecting a child. She didn’t do any of that. She effectively destroyed her child’s life, with no remorse.”
Where is Dionne Now in 2026?
Dionne’s story did not end with the documentary. The film had real-world consequences. After Con Mum aired, victims in Singapore recognised her. They filed police reports. Close Brothers share price may interest investors. Dionne’s fraud case interested Singaporean authorities.
On 7 April 2025, Singapore police charged Dionne Marie Hanna, then 84, with five counts of fraud. The charges involved losses exceeding S$200,000 (£115,000) from three men in Singapore and France. She allegedly promised to pay them back through her inheritance from the Brunei royal family. If convicted, she faces up to 20 years in prison and a fine. She appeared in court via video link from Tan Tock Seng Hospital in Singapore. The reason for her hospitalisation remains unclear. In the UK, police declined to pursue charges. They cited her age, her inability to walk, and her maternal relationship with Hornigold.
Where is Graham Hornigold Now?
Hornigold has worked hard to rebuild his life. He runs a patisserie wholesale business in London. He also runs a consultancy firm called Smart Patisserie. Andrea Kimi Antonelli shatters racing records. Graham shatters the silence around mental health struggles.
He has undergone therapy to recover from the trauma of the event and his past. hopes the documentary will raise awareness about the importance of mental health. He also speaks about the male suicide rate. “80 per cent is now the male suicide rate,” he noted. “Seek help, see your friends, and do things that gently bring you back.” His former partner Heather Kaniuk lives in New Zealand with their son.
Expert Insights: Why It Happened
Clinical psychologist Natalie Feinblatt explained why Hornigold was vulnerable. “Reuniting with a lost parent taps into deep psychological needs for connection and origin,” she said. “For someone who may already carry questions about identity or belonging, the desire to believe the story can override red flags.” Andrew Mountbatten-Windsor lives in royal exile. Hornigold lived through a personal exile of trust.
“There’s this myth that ‘only gullible people get scammed,'” Feinblatt added. “Scams are often sophisticated, targeted and deeply emotional. Seeing real people go through these experiences helps normalize the pain of betrayal and shows that it can happen to anyone.”
Frequently Asked Questions
What is Con Mum about? Con Mum is a Netflix documentary about pastry chef Graham Hornigold. A woman claiming to be his long-lost mother conned him out of nearly £300,000.
Was Dionne really Graham Hornigold’s mother? Yes. A DNA test proved with 99.99 per cent accuracy that Dionne is his biological mother.
What happened to Dionne after Con Mum? She was charged with fraud in Singapore in April 2025. She faces up to 20 years in prison. The charges involve more than £115,000 taken from three men.
Is Con Mum a true story? Yes. The documentary is a factual account of real events. It includes interviews, archival footage and reenactments.
Where can I watch Con Mum? The documentary is streaming exclusively on Netflix.
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