Don’t Go to Sleep

The younger daughter who first discovers her sister Jennifer's ghost. She becomes a conduit for the haunting and ultimately is possessed in the film's climax, torn between fear and love for her sister. Her struggle highlights how grief and family pressure can blur reality.

Jennifer is the deceased sister whose ghost returns to torment the family, revealing anger and jealousy toward her siblings. Her presence orchestrates the family’s misfortunes and culminates in desire for revenge against the living.

The father who is grieving Jennifer's death and trying to keep the family safe as tragedy unfolds. He faces fear and guilt as events spiral, including the car crash that claims Jennifer’s life and tests his ability to protect his family.

The mother who endures the family's terror and works to shield her children. She experiences danger herself, escapes injuries, and wrestles with the impact of Jennifer's conduct on the household.

The son who resents his sister's favoritism and participates in a prank that precedes the tragedy. He is involved in dangerous situations, including the rooftop Frisbee incident, which amplifies the film's peril for the family.

The elderly grandmother who accompanies the family. She becomes an unintended victim when an iguana appearing in her bed triggers a fatal heart attack, symbolizing the fragility of life in the wake of traumatic events.

A medical professional connected to the family, present in the narrative to address injuries and the escalating crisis as the haunting unfolds.