2. A Murder in D.C.

The murder of a political staffer in 2016 spawns a myriad of unfounded conspiracy theories as the man's family — and the truth — hang in the balance.

3. I'm Not a Nazi

A woman recounts her journey to becoming a mouthpiece for white nationalist hate speech, work that culminates in high-profile violence and murder.

4. Sextortion

Several women recall their harrowing experiences with one man's heinous attempts at virtual blackmail, aimed at obtaining sensitive sexual material.

5. The Stingray (1)

From counterfeit Beanie Babies to very real tax fraud: Two skilled hackers revisit the cyber schemes that landed them in the sights of law enforcement.

6. The Stingray (2)

The FBI escalates its pursuit of an elusive hacker, but he soon turns the tables by questioning the legality of a key tool in their investigation.