A decades-old unsolved Tennessee case stumps top detectives until a high school sociology class breaks it wide open.

Using a unique 90 Day Fiance visa, overseas fiances will travel to the US to live with their partners for the first time. Each couple will have just 90 days to decide to get married or send their international mate home.

It is the biggest home cook competition of all time. Actor, television host and former pro football player Terry Crews hosts as 100 of America's elite home cooks enter the stadium kitchen arena where they will be challenged to the most unpredictable, professional-chef level cooking competition ever. As the competition begins, chefs are selected at random to come to the floor to compete while the "Challenge Mixer" dictates the challenges they will face ranging from fast-paced trivia contests to 30-minute do-or-die cooking battles. Top culinary content creator Nick DiGiovanni and chef and NYT best-selling cookbook author Alex Guarnaschelli are the judges that determine who stays and who goes. Each round's winner will be given a chance to take the cash or add it to the ever-growing grand prize pot, which starts at $100,000...so as the number of cooks goes down, the grand prize goes up.

A decades-old unsolved Tennessee case stumps top detectives until a high school sociology class breaks it wide open.

A decades-old unsolved Tennessee case stumps top detectives until a high school sociology class breaks it wide open.