Cathryn Mellender played a key role in the Chandler Halderson case, which is the focus of ABC's 20/20 episode Road Map To Murder, airing May 30, 2025.

When Chandler Halderson's lies about attending college and being offered a SpaceX job were about to be exposed, prosecutors ...

Cathryn Mellender, cleared by police, showed detectives a screenshot of a map that placed her boyfriend, Chandler Halderson, ...

MADISON (WKOW) — Chandler Halderson's former girlfriend, Cathryn Mellender, took the stand Thursday afternoon. Halderson is charged in the death's of his parents, Bart and Krista Halderson after he ...

Chandler's girlfriend, Cathryn "Cat" Mellender, allowed investigators to download data from her phone. Sims heard that Chandler had cheated on Mellender in the past, so she would keep tabs on him ...

This story previously aired on Aug. 5, 2023. Bart and Krista Halderson had everything a couple could want: a beautiful home in Windsor, Wisconsin, and two sons they adored. Mitchell, 24, who ...

Bart and Krista Halderson had everything a couple could want: a beautiful home in Windsor, Wisconsin, and two sons they adored. Mitchell, 24, who worked in tech, Chandler, 23, a college student ...

Chandler Halderson's parents paid the ultimate price as his lies unraveled. A social media app's location tracking feature helped investigators crack a gruesome double murder case in Wisconsin ...