John Meehan, the man known to millions as “Dirty John,” was stabbed to death in 2016 after he attacked Terra Newell, the youngest daughter of his second wife, Debra, with a knife. Terra says she picked up the weapon when it landed near her after Meehan dropped it.

“I knew in that moment that if I didn’t do something, he was going to take my life,” she says.

“He attacked the wrong little girl,” says Dr. Phil to viewers and audience members in “The Bubble Over My Head.” “That’s why you just don’t ever give up.”

Hear more from Terra, her mother, Debra, and John Meehan’s first wife, Tonia Bales, who shares details from her 10-year marriage to “Dirty John” in an exclusive interview with Dr. Phil airing Tuesday. Plus, find out why Tonia says there’s one part of her marriage to Meehan she doesn’t regret.

Check your local listing to find out where to watch.

Tonia Bales shares details from her 10-year marriage to “Dirty John” in her new podcast, “The First Wife: John Meehan’s Reign of Terror,” available on Audible. Debra Newell’s book, “Surviving Dirty John: My True Story of Love, Lies and Murder,” is available wherever books are sold. >

WATCH: ‘I Just Don’t Want To Take Credit For Killing Someone,’ Says Woman Who Stabbed ‘Dirty John’ In Self-Defense

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