As former Illinois police officer Drew Peterson remains in prison for the murder of his third wife, his second wife opened up publicly for the first time during Thursday night’s “Grace vs. Abrams” episode.

When Vicki Connelly married Drew Peterson, she saw a charming man who made her laugh. Decades later, she relived her marriage as she talked to Nancy Grace and Dan Abrams and explained she realized that he was a wolf in sheep’s clothing. When asked if she thought he murdered his missing fourth wife, Connelly affirmed with “absolutely” and “no doubt in my mind.”

Connelly also said that during their marriage, Peterson threatened her numerous times.

Abrams: “Vicky, did he ever threaten you during your relationship?”

Connelly: “Yes. It happened several times during the course of every year. You know, his number threat to me was ‘I could kill you and make it look like an accident.’ I would just do everything in my power not to cross him.

Drew Peterson is in prison for the murder of this third wife, but has never been charged for the disappearance of his fourth wife, Stacy Peterson. Although it’s widely speculated that Peterson murdered his fourth wife, although he’s never been charged with the crime.

Connelly joined other key guests on the second episode of “Grace vs. Abrams” to discuss the possibility, including Peterson’s former lawyer, Joel Brodsky, and Stacy Peterson’s pastor, Neil Schori.

Tune in for the next “Grace vs. Abrams” airs next Thursday at 11 p.m. on A&E. The two legal analysts are slated to dig into the notorious Chandra Levy case.

[Feature Photo:Vicki Connelly, Drew Peterson/A&E Screenshot, Mugshot]