Rivaling fictional blockbusters like "Girl on a Train" and "Gone Girl," Investigation Discovery's "Married With Secrets" looks at when happily ever after goes horribly wrong. The series dramatizes the twisted psychological warfare of marriages, telling stories of seemingly perfect unions that turn nightmarish after husbands and wives embark on secret lives that take them down devastating paths. From secret sadomasochistic sex games to hit men for hire, there's no vow too sacred to break and no place too twisted to go for these spouses. And once skeletons come out of the closet, no one is safe.

In the criminal justice system, sexually-based offenses are considered especially heinous. In New York City, the dedicated detectives who investigate these vicious felonies are members of an elite squad known as the Special Victims Unit. These are their stories.