Dream Demon is a British horror film

Horror film

Horror films seek to elicit a negative emotional reaction from viewers by playing on the audience's most primal fears. They often feature scenes that startle the viewer through the means of macabre and the supernatural, thus frequently overlapping with the fantasy and science fiction genres...

, released in 1988, starring Jimmy Nail

Jimmy Nail

James Bradford "Jimmy" Nail is an English singer-songwriter, actor, musician, film producer, film score composer and television writer....

, Timothy Spall

Timothy Spall

Timothy Leonard Spall, OBE is an English character actor and occasional presenter.-Early life:Spall, the third of four sons, was born in Battersea, London. His mother, Sylvia R. , was a hairdresser, and his father, Joseph L. Spall, was a postal worker...

 and Jemma Redgrave

Jemma Redgrave

Jemma Redgrave is a fourth-generation English actress of the Redgrave family.-Early life/family:Born in London as Jemima Rebecca Redgrave, she is the daughter of the late actor Corin Redgrave and his first wife, the late Deirdre Hamilton-Hill, a former fashion model. They divorced when Jemma was...

 (Diana), who is on the verge of marrying caddish Mark Greenstreet

Mark Greenstreet

Mark Greenstreet is a British actor who first came to prominence in the 1985 BBC television serial Brat Farrar. First and foremost a stage actor, Greenstreet played many of the great leading roles from the works of Shakespeare, Chekhov and Ibsen to Orton, Wilde and Coward in the UK and around the...

 (Oliver). Spending the night in her spooky old family mansion, Jemma stares into a mirror and begins experiencing terrifying dreams. She sees her past, present and future. And without knowing how or why, Diana pulls American tourist Kathleen Wilhoite

Kathleen Wilhoite

Kathleen Wilhoite is an American film and television actress, as well as a singer-songwriter. She also voiced the title character in the animated series Pepper Ann...

 (Jenny), who she meets one day while getting harassed by the press (Jimmy Nail

Jimmy Nail

James Bradford "Jimmy" Nail is an English singer-songwriter, actor, musician, film producer, film score composer and television writer....

 and Timothy Spall

Timothy Spall

Timothy Leonard Spall, OBE is an English character actor and occasional presenter.-Early life:Spall, the third of four sons, was born in Battersea, London. His mother, Sylvia R. , was a hairdresser, and his father, Joseph L. Spall, was a postal worker...

), herself the victim of a troubled past, into her nightmarish visions.