When the bond between twin brothers proves stronger than the one between a husband and wife, true love takes a tragic, deadly turn.

Cynthia Smith and David Mueller couldn't be more different, but they say opposites attract. When these two meet, there's an instant connection. Then a tragic illness strikes. Will they keep the spark alive, or will they break their sacred marriage vows?

Chris and Theresa Lockhart seem like a perfectly matched married couple. But when Theresa vanishes in May 2017, it leads to five months of hell for everyone and a final, shocking act that reveals all.

When police officer Rob and former beauty queen Joanna reunite years after high school, he seems to be her Prince Charming. But money troubles and infidelities bring this fairytale to a tragic end when one of them is found dead at Devil's Corral.

Two lost souls unlucky in love, Frank and Angelina Rodriguez, have found soulmates in each other. But in September 2000, a sudden death leads investigators to uncover a shocking tale of how one person's compulsion can turn into murder.