anyone remember that show..

does anyone remember that show ..i think it was on fox or something.it aired about 4 years ago. it was a reality about like 10 people who were put in a town to figure out a murder mystery..they got clues and each week 2 people would go to places where the clues led and if they got it right they stayed and if they got it wrong the murderer got them. it was really cool. i forgot the name.it wasnt a real murder mystery tho. the winner got money at the end.ive been dieing to figure out the name...please if u kno post the name!thanx!