What were residents of Murphysburo, Illinois witnessing during a spate of sightings of an unknown creature, in the early-mid 1970s? Police reports indicate it was something of a large stature that walked on two feet, with a shrill scream that would send shivers down ones spine...The variety of witnesses all share common details in their descriptions of this THING. Was it what has come to be known as "The Big Muddy Monster?" #MuddyMonster #BigMuddyMonster #BigMuddy #Bigfoot #Sasquatch #CaseFiles