Plot Synopsis

VENGEANCE: KILLER NEIGHBORS is the second of HLN's VENGEANCE franchise. The network is set to release future episodes of revenge and betrayal under the titles VENGEANCE: KILLER COWORKERS and VENGEANCE: KILLER FAMILIES.

This one-hour crime docuseries covers stories of unexpected crimes between seemingly peaceful neighbors. Each one-hour episode takes viewers through the twists and turns of the investigation, the arrest, and the quest for justice. VENGEANCE: KILLER NEIGHBORS premiered on Sunday, August 4, 2019 from 8-10pm ET/PT, as HLN debuted back-to-back new episodes:

"Sinister Surveillance" (8pm): When a Tennessee man is shot down in front of his own home, police use home video to unravel a vicious feud between rural neighbors. Was the shooting in self-defense or a calculated cold-blooded murder?

"Poison Mastermind" (9pm): Tensions boil over between neighbors in small-town Florida, when a local waitress and her family fall victim to a poisoning. Investigators must track down the mastermind behind one of the most cunning murder plots they've ever seen.

Subsequent episodes include:

"Fatal Fence Feud" (Premieres Sunday, August 11 @ 8pm): A giant barricade is erected between property lines in an attempt to resolve bad blood between neighbors, but it doesn't stop their animosity from escalating out of control and resulting in a brutal murder.

"Deerly Departed" (Premieres Sunday, August 18 @ 8pm): When the sounds of gunfire erupt in a usually quiet, Minnesota suburb, the police begin receiving frantic 911 calls. One such call is from the shooter himself, a man who police soon learn became unhinged over the sight of too many deer.

"Killer Cookout" (Premieres Sunday, August 25 @ 8pm): Police arrive on the scene of a barbeque turned bloodbath and begin to unravel a neighborhood feud that pushed one man to the point of no return.

"Deadly Trespass" (Premieres Sunday, September 1 @ 8pm): When a wealthy neighbor begins buying up Montana land and restricting access to the public mountain trails, one man cuts the locks and ends up dead.

"Nightmare Next Door" (Premieres Sunday, September 8 @ 8pm): A man is gunned down in front of his home in Denver, Colorado, and the shooter is nowhere to be found. It takes investigators six years to track the killer down and bring them to justice.

"Blood and Terror" (Premieres Sunday, September 15 @ 8pm): When a gay rights activist is stabbed to death in his own apartment, police are tasked with tracking down his killer -- and in the process, they uncover a dark world of paranoia and delusions lurking in the heart of London.

"Murderous Moms" (Premieres Sunday, September 22 @ 8pm): A front yard brawl between two Euclid, Ohio families leaves one person dead and investigators wondering how teenage heartbreak started it all.

"Lethal Brawl" (Premieres Sunday, September 29 @ 8pm): A mother who is also a recovering addict is stabbed while standing up to the neighborhood bully. Will grainy video and unreliable witnesses stand in the way of investigators determining who was holding the knife that killed her?