2. Mother Knows Best

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

3. Soho Horror

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.

4. Your Eyes or Your Life

"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.

5. 9/11/2001

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.