Keith Morrison reports on the 1992 murders of Tanna Togstad and Tim Mumbrue in rural Waupaca County, Wisconsin.
True-crime series "Dateline NBC" will explore the stabbing deaths of Tanna Togstad and Tim Mumbrue in rural Waupaca County.
To find out what happened, watch the full episode “Running Man” on Peacock now. You can also watch on the NBC app or listen ...
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