TV Guide Crime & Investigation Network Saturday

Luddy and Finch help a heroin addict suffering from an overdose in a parking lot; Niki and Nicole put their compassion on display while supporting a woman.

A brawl erupts inside an ambulance when an overdose patient wakes up; two first responders rush to the scene of a burning motorcycle crash.

A man is shot by a trusted acquaintance, and first responders are on standby until the shooter is taken into custody before they are able to provide aide.

A man is attacked by his girlfriend, and paramedics rush to provide help; a report of gunshots being fired send two first responders to rescue a man.

Lacey and Stacey restrain a patient that is suffering from hallucinations; Matt and Henry come face to face with a paramedic's most difficult challenge.

An opioid epidemic sweeps the nation, and emergency teams try to help; a heatwave across the south causes a man to pass out from heat exhaustion.

Mildred Muhammad, the ex-wife of John Allen Muhammad, infamously known as the "DC Sniper," reveals how the man she loved disintegrated into a monster.

Omar Mateen's first wife talks with family members of victims killed in the Pulse Night Club shooting and discusses internal battles her former husband faced.

The brother of serial shooter Dale Hausner, who terrorized the city of Phoenix, Arizona in a year and a half-long killing spree, shares his own personal story.

The daughter of Keith Hunter Jesperson, infamously known as the "Happy Face Killer," shares her own personal story as the daughter of a serial killer.

Karen Kuzma, the sister of John Wayne Gacy, speaks out for the first time and reveals intimate details of one of the world's most infamous serial killers.

The ex-sister-in-law and niece of Richard Ramirez, who killed 13 people in his home invasion spree, talks to a man who still hasn't recovered from an attack.

The daughter of the Craigslist killer talks with the son of a man who was murdered by her father and opens up about why she feels guilty of her dad's crimes.

Cindy Brown, the ex-wife of serial killer Bobby Joe Long, reveals how the man she fell in love with as a child committed unknowable crimes.

Daughters of American serial killer Robert Lee Yates, tell the inside story as to what life was like being raised by a notorious murderer.

Jose Ramirez Gonzalez discusses how he and three of his co-workers were attacked at a local fast food restaurant in 1997 by 39-year-old Paul Dennis Reid Jr.

Enietra Margette discusses how she was shot in the chest after accepting a ride from a strange man in November of 1988, as she was on her way to a party.

Fabienne Witherspoon discusses how she fought against the man who tried to kill her after she was attacked in her own home at the age of 19.

In 1975, William Bonin abducts 14-year-old David McVicker in California and then embarks on a killing spree; David recounts details about the Freeway Killer.

Josephina Rivera discusses her time spent as a captive in a basement, and she emphasizes how 43-year-old Gary Heidnik kidnapped four other women.

Filmmakers Josh Zeman and Rachel Mills revisit the case of the "Long Island Serial Killer" and find themselves deep within the world of online escorting.

Josh and Rachel examine the "Butcher of Manorville" torso killings and interview a victim's former pimp, resulting in crucial evidence being reexamined.

Josh and Rachel look into the murder of an escort whose death has possible ties to the escorts found at Gilgo Beach and a similar case in Atlantic City, N.J.

Josh and Rachel revisit a motel in Atlantic City, N.J., in search of the "Eastbound Strangler"; the duo talk to someone who believes she encountered the killer.

Filmmakers Josh Zeman and Rachel Mills revisit the case of the "Long Island Serial Killer" and find themselves deep within the world of online escorting.

Josh and Rachel examine the "Butcher of Manorville" torso killings and interview a victim's former pimp, resulting in crucial evidence being reexamined.

Josh and Rachel look into the murder of an escort whose death has possible ties to the escorts found at Gilgo Beach and a similar case in Atlantic City, N.J.

Josh and Rachel revisit a motel in Atlantic City, N.J., in search of the "Eastbound Strangler"; the duo talk to someone who believes she encountered the killer.

Enietra Margette discusses how she was shot in the chest after accepting a ride from a strange man in November of 1988, as she was on her way to a party.

Fabienne Witherspoon discusses how she fought against the man who tried to kill her after she was attacked in her own home at the age of 19.

In 1975, William Bonin abducts 14-year-old David McVicker in California and then embarks on a killing spree; David recounts details about the Freeway Killer.

Josephina Rivera discusses her time spent as a captive in a basement, and she emphasizes how 43-year-old Gary Heidnik kidnapped four other women.