
Mary is convinced something lives under her bed—and she’s right. A year after her younger sister dies in a car crash, Mary begins seeing vivid visions of the dead girl. At the same time, the family home is plagued by unsettling phenomena, turning every room into a source of dread and mystery.
Does Don’t Go to Sleep have end credit scenes?
No!
Don’t Go to Sleep does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Don’t Go to Sleep, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Robert Webber
Dr. Cole

Dennis Weaver
Phillip

Oliver Robins
Kevin

Ruth Gordon
Bernice

Claudette Nevins
Dr. Robin Samuel

Valerie Harper
Laura

Tim Haldeman
Intern

Robin Ignico
Mary

Marilyn Coleman
Sarah

Kristin Cumming
Jennifer

Haven Earle Haley
Priest

Ned Wynn
Paramedic

Ross Porter
Radio Sportscaster (voice)
Discover where to watch Don’t Go to Sleep online, including streaming platforms, rental options, and official sources. Compare reviews, ratings, and in-depth movie information across sites like IMDb, TMDb, Wikipedia or Letterboxd.
Challenge your knowledge of Don’t Go to Sleep with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
Which actor portrayed the father, Phillip?
Dennis Weaver
Oliver Robins
Ruth Gordon
Valerie Harper
Show hint
Read the complete plot summary of Don’t Go to Sleep, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
A family of four—the parents Phillip Dennis Weaver and Laura Valerie Harper, their son Kevin Oliver Robins, and daughter Mary Robin Ignico—move to a new home with Grandma Bernice Ruth Gordon, mourning the loss of their sister Jennifer Kristin Cumming. They hope this change will help them begin anew and put Jennifer’s tragedy behind them.
Seeking to start fresh, the family believes the house could be a place to heal and build a new life together. But soon after settling in, Mary hears a voice that seems to come from beneath the bed, calling her name as if Jennifer were still nearby. When Mary investigates, she discovers that Jennifer has returned as a ghost and begins to appear to her repeatedly, revealing a chilling wish to kill the entire family except for Mary.
This devastating revelation unleashes a sequence of twisted fates: Kevin’s iguana somehow ends up in Grandma Bernice’s bed, triggering a fatal heart attack for the elderly woman; Kevin’s attempt to retrieve a Frisbee from the roof ends in a deadly fall; and Phillip, while bathing, listens to a radio that ends up electrocuting him, leaving Laura to scramble to safety, though she sustains an arm injury in the process. Believing Mary to be the killer, the authorities place her in a mental institution as she grapples with the horror of what she may have done.
A pivotal flashback reveals the siblings’ hidden tensions: Kevin, feeling overshadowed by Jennifer, persuades Mary to join in a prank by tying Jennifer’s shoelaces together. The prank spirals out of control when a van collides with the family car, and while everyone except Jennifer manages to escape, she screams for help as Mary races to warn their father. But Phillip is unable to rescue her before the car bursts into flames, leaving Jennifer to perish in the wreck.
In the present, Mary insists that she is actually Jennifer, as the deceased sister possesses her living self, blurring the line between victim and perpetrator. Later, Laura lies in bed when Jennifer’s ghost appears at the foot of the bed and greets her with a chilling greeting: > “Hi, Mommy.” The film closes with Laura’s terrified screams echoing through the room, leaving a house full of unanswered questions and lingering dread.
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