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Collin Gosselin says one of his biggest public challenges to his mother,Kate Gosselin, has gone unanswered.
On Sunday, June 28, the former Jon & Kate Plus 8 star shared a clip from an interview that he said was from 2025 where he publicly invited his estranged mother to take a lie detector test alongside him.
Sharing the video (which was posted by reporter Strange McKnights the day before) to his Instagram Stories, Collin added an update. “This was a year ago and I’ve been stood up by my mom… again.”
The interview, originally published in 2025, came after the 22-year-old publicly challenged Kate to sit down with him while both were connected to polygraph equipment. “I did just say on social media that I would like to invite my mom to do a lie detector test,” he explained. “I wanna get into everything.”
“Mom, if you’re listening to this, we would ask about the zip ties… I would also let her ask questions like, were you ever violent towards your siblings?” Collin stated.
Collin said he envisioned both of them being connected to “lie detectors, heart monitors, everything,” while either they—or an independent interviewer—asked questions about their years-long family conflict. “I want the truth to be told,” he said. “I always say there’s the truth and then there’s the truth from Kate Gosselin’s point of view. So, let’s just put it all out there.”
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Collin’s latest comments come as he prepares to release his memoir, In the Shadow of Eight: Surviving the Reality of My Childhood. “For a long time, I wasn’t sure I’d ever tell this story,” he wrote while announcing the book earlier this month. “Growing up, millions of people watched my life on television. People felt like they knew me. They knew my family. They watched me grow up. But there was so much they never saw.”
The memoir is expected to revisit his upbringing on reality television, including his relationship with Kate, 51, who sent him to a behavioral health institution in 2016, later citing what she described as “unpredictable and violent behavior.”
In the Shadow of Eight is set to hit shelves on October 13 this year.