Crupi, 29, whose husband, Jonathan Crupi, pushed her down the stairs, stabbed her 15 times, and then went to visit a sex worker.

Find out more about the tragic murders of Mark Hasse, Mike McLelland, and Cynthia McLelland, as told in Oxygen's Prosecuting ...

Read about “Club Kid" Andre “Angel” Melendez, who vanished from New York City, where he was known for donning outlandish outfits like feathered wings.

Read about Holocaust survivor Felix Brinkmann, who escaped death in gas chambers, became a popular New York City disco owner ...

Find out how a New York socialite's disappearance led investigators to the mother-son duo of Sante and Kenny Kimes and their ...

Investigators initially believed that Taylor Wright disappeared of her own accord, but the truth is much more sinister.

After Farah Fratta is shot, the copious amount of blood found at the crime scene indicates that she may not survive.

Jonathan Crupi behaves suspiciously after Simeonette Mapes-Crupi is found dead.

Police speak to Luis Perez, a handyman at an apartment building owned by Bruce Blackwood, and are given troubling information.

Investigators speak about the killing of Mark Hasse.

Bob Fratta, a police officer and the estranged husband of Farah Fratta, is interrogated.

Bob Fratta appears to be hiding information during his interrogation, but was he involved in his wife's brutal slaying?