"Where is Joey?" An Upper East Side afterparty gone horribly wrong turns into a homicide investigation — and a parent's worst nightmare.

After a beloved socialite disappears without a trace, detectives uncover a shocking string of crimes that trace back to a dangerous mother-son duo.

When a promising fashion designer is found dead in a bathtub, detectives must unravel what really happened at a private members club on her final night.

"The case of Lourdes Gonzalez haunted me." Detectives revisit the gruesome murder of a young mother — and the infamous Central Park killer who did it.

The harrowing story of the 9/11 attacks, as told by NYPD first responders who rushed to Ground Zero and who still carry the weight of tragedy today.