NEED TO KNOW

Tanna Togstad and Timothy Mumbrue were found stabbed to death inside a Wisconsin home in March 1992

Three decades later, Tony Haase confessed to the murders after DNA evidence tied him to the crime

His lawyers later argued that he was coerced into a false confession, and Haase was acquitted of the double homicide in August 2025

In November 2025, Dateline , which airs specials on Fridays at 9 p.m. ET, investigated another harrowing unsolved murder that left one rural Wisconsin community with more questions than answers.

The case began in March 1992, when 23-year-old Tanna Togstad and 35-year-old Timothy Mumbrue were found stabbed inside a farmhouse in Royalton, Wis., The Post-Crescent reported. Togstad was sexually assaulted and stabbed to death. Mumbrue, who w

See Full Page