Lululemon employee Jayna Murray is found stabbed to death inside one of the company's Washington, DC stores. Her co-worker is bound and bleeding in a room. As different suspects emerge, evidence starts to point to someone on the inside.

Stephen Paddock, the 2017 "Las Vegas shooter," is spotlighted. He opened fire into a crowd of approximately 22,000 concertgoers who were attending a country music festival on the Las Vegas Strip. Paddock committed suicide in his hotel room shortly after the shooting.

On July 22, 2015, authorities arrest Michael Bever and his brother Robert Bever for the murder of five people. Authorities discover the bodies of 52-year-old David Bever, 44-year-old April Bever, a 5-year-old girl, a 7-year-old boy and a 12-year-old boy inside the family's home.

A pregnant 22-year-old, Savanna LaFontaine-Greywind, disappears from her Fargo, North Dakota apartment in 2017. When the baby turns up alive, the investigation reveals a suspect close to home.

A tip leads the authorities in Moore, Oklahoma to a Super 8 hotel where they find a missing underage boy and a married state senator, Ralph Shortey, just days after Shortey pleaded guilty to child prostitution and pornography charges.

Sarah Stern vanishes just before Christmas in 2016, and her car found abandoned by the Shark River. The missing persons case soon turns into a homicide and cops start focusing on her childhood friend, Liam McAtasney.