Edgar Davidson agrees to talk to investigators but tells a different story. Cathy’s sister Marilyn indicates her interest in solving the case. Tom Nugent casts doubt on Gerry Koob’s story about the night of Cathy’s disappearance. The search for the other man at Cathy’s apartment Pete McKeon may have information about Koob’s relationship.
What Cathy’s roommate Sister Russell knew about the abuse and Cathy’s relationship comes into question. 'Jane Doe' and 'Jane Roe' meet for the first time and talk about the Keough. Abbie investigates Baltimore’s investigation into the abuse reports they received. Marilyn Cesnik Radakovic recalls receiving a mysterious letter from her sister after her death.

Lil Hughes Knipp recalls meeting Father Maskell near his end... and knowing that he would never be charged. The search for Brother Bob and a potential killer begins, and the revelation of a potential suspect named Edgar Davidson comes forward with an interesting story.
With more people coming forward, more suspects appear including a man named Billy Schmidt who lived in Cathy’s apartment. A contact from one of Cathy’s sisters could give new insight on the case.

Charles Franz talks about his relationship with Father Maskell as a young student and reveals what he knows about the Church’s involvement with Maskell. Cathy’s sister sees the necklace given by Edgar Davidson and questions if it has significance.
Potential DNA and evidence could exist for the crime, and the police might be forced to act. A push for victims’ rights in Maryland goes to a committee but getting justice might be more difficult... and time doesn’t stand still for anyone.

This gripping docuseries delves into the shocking realities of toxic and dangerous past relationships. Featuring a mix of real-life testimonials, bodycam footage, and reenactments, it uncovers the darkest sides of betrayal, violence, and manipulation that go far beyond what most people imagine. Each of the episodes explores a different terrifying story, making every installment feel fresh and unpredictable. From cases of fraud and stalking to heart-wrenching custody battles and even murder, the series keeps you on edge as you witness the devastation left behind by these monstrous ex-partners.
The series taps into the universal fear of not truly knowing those closest to us. The fast-paced episodes bring in real police footage, victim accounts, and expert analysis, building a complete narrative of how these relationships took a horrifying turn. With all four episodes now available in a single film, ‘Worst Ex Ever’ is a must-watch for anyone drawn to true crime, though viewer discretion is advised due to the heavy and potentially triggering themes of abuse, manipulation, and violence.