Another three-day weekend is upon us. Time to revisit our three day weekend series of stories about what we all do with one more day in our weekends. For the past decade, Francis Heaney and Dan Katz have spent the MLK weekend at MIT every year. They go to compete in the MIT Mystery Hunt, which recently celebrated its 29th anniversary. Weekend America's Charlie Schroeder recently talked with them about why they return to play the hunt year after year.
