Kevin Mahoney vanished from a known party house in Fargo on Oct. 2, 1993. Some party-goers told investigators that he left on foot for his brother's house in nearby Moorhead. His brother wasn't home that night, and there's no indication he made it to his destination. 

Others believe Kevin never left the party house. 

Kevin's sisters are dogged advocates for their brother's case. They, along with the Fargo Police Department, believe foul play was involved. 

In part 2 of this series, find out what Kevin's sisters believe happened to their brother that night -- and why Fargo investigators dug up the party home's basement in search of Kevin. 

Will someone finally come forward with what really happened the night Kevin Mahoney vanished? 

Click here for the full story: https://www.inforum.com/news/the-vault/this-missing-mans-sisters-wont-rest-until-someone-speaks-up-what-happened-to-kevin-mahoney

This episode is narrated, produced and written by Trisha Taurinskas