Jon Gosselin speaks out in defense of son Collin's bombshell memoir, threatens legal action

Jon Gosselin fiercely defended his son Collin after the 22-year-old’s new memoir made shocking allegations against his mother, Kate Gosselin.

Jon said he was proud of Collin’s bombshell book, “In the Shadow of Eight: Surviving the Reality of My Childhood,” and shut down any allegation that he’s mentally ill — which Kate claimed in a TikTok comment Tuesday.

“First and foremost, I couldn’t be more proud of my son’s heartbreaking memoir and his mission to help other victims of abuse,” Jon told Us Weekly in a statement Thursday.

“Also, let me be very clear: If you continue to falsely label my son Collin as ‘mentally ill,’ you will be held accountable,” he continued. “As you know, Collin has been evaluated by multiple independent psychiatrists, and that narrative is proven categorically untrue.”