The Secret of Parker House

• In the fourth-season opener, MacGyver must act as a ghoulish ghostbuster in a spooky old house inherited by his friend, a dead ringer for her insane aunt, who once lived in the house.

Blood Brothers

• Back in his home town, MacGyver finds past and present overlapping as he remembers a fatal shooting accident from his youth while trying to stop his friend's son from using a gun to defend himself against drug-dealing hoodlums.
  

The Outsiders

• In Pennsylvania, MacGyver intervenes in a standoff between Amish who won't leave their land and a construction company waiting to bulldoze it.

On a Wing and a Prayer

• It appears that Thornton and a nun haven't a prayer after they're taken hostage by Central American rebels.

Collision Course

• MacGyver returns to his racing roots to test a car engine designed by the Foundation, but a rival car owner has some dirty tricks up his sleeve.

The Survivors

• During routine survival training in the woods, MacGyver and Thornton discover the wreckage of a DEA plane, which MacGyver determines was shot down by drug smugglers.

Deadly Dreams

• MacGyver joins a police task force pursuing an escaped psychopath, a man MacGyver suspects is a pawn in a larger scheme.

Ma Dalton

• Jack Dalton and MacGyver begin a search for Dalton's mother and learn that she's a fugitive being pursued by a bounty hunter.

Cleo Rocks

• A figure lurking in the backstage shadows of a rock musical wants to use the star, MacGyver's friend Penny, as a puppet in a crazed play of vengeance against MacGyver.

Fraternity of Thieves

• A classified Phoenix technology system could be compromised by espionage, and one of the culprits is someone in the Foundation, close to the heart of Thornton.

The Battle of Tommy Giordano

• MacGyver's friend wins custody of her son, prompting her ex-husband to seek the help of his uncle - "the absolute, undisputed head" of a crime family.
  

The Challenge

• A youth from an inner-city club run by MacGyver's friend is framed for a theft by a racist who'll stop at nothing to shut the club down.

Runners

• MacGyver offers protection to a runaway girl, and as he helps her cope with her bitter past, he unveils a tragic memory of his own.

Gold Rush

• MacGyver joins a US-Soviet team in Alaska trying to retrieve gold from a wrecked World War II transport plane, but they're left out in the cold when they discover someone's gotten there first.

The Invisible Killer

• MacGyver leads a group of Phoenix employees into the mountains to reduce stress levels, but stress is replaced by paranoia when it's learned that murderous convicts are on the loose.

Brainwashed

• A power-hungry couple seeking to overthrow a foreign government have "programmed" Dalton to assassinate the country's president.
  

Easy Target

• MacGyver and Thornton are held hostage by terrorists bent on crippling the nearby metropolitan area with a futuristic electronic device.
  

Renegade

• A mentally disturbed man steals a precious vial of deadly bacteria, and MacGyver is shocked when a confrontation with the thief reveals that he's a friend who once saved MacGyver's life.

Unfinished Business

• An escaped convict hunts MacGyver in the woods and he could be any of a number of villains MacGyver, Thornton and Jack Dalton can recall.