Night Screams (1987) Plot Summary Explained

Joni is the actual killer. She is a former mental patient who gatecrashes David's party along with two escaped convicts, Runner and Snake. While the convicts kill some victims, Joni is responsible for most of the murders throughout the night, including the final attempt on David's life.

Foreshadowing: Earlier in the party, Joni runs upstairs after feeling insulted by David's friends, establishing her as someone with a volatile emotional state.

• joni killer
• final girl
• twist killer
• slasher ending

Joni targets David's friends out of obsession and jealousy. She reveals to David that she is insane and responsible for killing nearly all his friends, though she claims to have spared Lisa. Her connection to David appears personal and twisted, though the exact nature of their prior relationship is not fully explained.

Foreshadowing: Joni talks to David about his friends earlier, showing resentment toward them.

• joni motive
• obsession
• kill list

Runner and Snake are the two escaped convicts who crash the party. Runner is suffocated by Snake with cling film in the cellar after expressing distress over the killings. Snake is killed when he attacks David, but the dying D.B. arrives and fatally stabs Snake before succumbing to his own wounds.

Foreshadowing: The convicts hide in the cellar from the beginning, establishing them as dangerous intruders.

• runner snake convicts
• escaped prisoners
• death scene

D.B. is stabbed in the gut while searching through the house for survivors after discovering the corpses of Russell, Runner, and Lisa. He dies from this wound but manages to crawl to David and fatally stab Snake just before dying, saving David's life.

Foreshadowing: D.B. is established as one of David's closest friends who stays throughout the party.

• db death
• stabbing
• sacrifice

David is blamed for the murders because he is found at the scene covered in blood and trauma, and he has a known history of hyperactivity disorder that causes him to lose his temper. Additionally, Joni, the actual killer, is taken to a hospital to recover while David remains under suspicion. The police and his parents arrive to find chaos, leading them to conclude David is responsible.

Foreshadowing: David's temper flares multiple times during the party, causing Joni to worry about him.

• david blamed
• framed
• wrongful blame

David has had a hyperactivity disorder since childhood that causes him to lose his temper. This condition is revealed at the film's end and is used to explain his volatile behavior throughout the night. The disorder becomes key to the tragic ending, as it contributes to others believing he is capable of the murders.

Foreshadowing: David's temper escalates multiple times during the party, worrying Joni.

• hyperactivity disorder
• temper
• childhood condition

Chris goes to swim in the pool after a romantic encounter. While swimming, the killer approaches from the shadows and kills him with an axe to the head. This occurs shortly after Doug's death in the sauna, adding to the mounting terror.

Foreshadowing: Chris and Doug pursue sex together while danger looms, separating them from the group.

• chris death
• axe
• pool killing

Doug rests in the sauna while the killings continue. The killer tosses a light-bulb cable onto the hot stones, which releases poison gas. Doug dies quickly from the toxic fumes in the enclosed sauna room.

Foreshadowing: The sauna is mentioned as a location where characters can retreat privately.

• doug death
• sauna
• poison gas

Joni claims to have spared Lisa, though Lisa is still found dead in the cellar strangled by Snake. The reason for this claimed exception is unclear, but it may suggest some lingering humanity or a specific grudge against the other guests. The contradiction between her claim and Lisa's dead body remains ambiguous.

Foreshadowing: Lisa goes to the cellar alone to get wine, putting herself in isolation.

• lisa spared
• exception
• contradiction

A total of ten people die throughout the night: Mason, Brenda, Chris, Doug, Chuck, Lisa, Runner, Russell, Frannie, and Snake. Additionally, D.B. dies from his wounds after saving David, and the final body count makes this one of the more deadly slasher films of its era.

Foreshadowing: The party starts with a large group of friends, creating many potential victims.

• body count
• deaths
• murders

Runner and Snake are two convicts who escaped from prison and are hiding out when they stumble onto David's party. They use the party as cover to evade police. Their presence adds an element of external threat, though their escape is not deeply explained, it simply provides the initial vector of danger arriving at the party.

Foreshadowing: The film establishes early that three uninvited guests crash the celebration.

• prison escape
• inmates
• asylum breakout

In the final confrontation, Snake attacks David and is about to kill him when the dying D.B. arrives and stabs Snake to death. David then reunites with Joni, who reveals she's insane and responsible for the killings. As Joni tries to stab David, David's parents and a police officer arrive and open fire. The film ends with David blamed for the murders while Joni recovers in a hospital.

Foreshadowing: D.B. searches for survivors after finding bodies, setting up his heroic final act.

• final showdown
• joni attack
• police arrival