“Side effects may include hallucinations, paranoia, detachment from reality, and nightmares that never end.”

Racheal Cain’s Somnium invites viewers into the shadowy corridors of an experimental Los Angeles sleep clinic where dreams aren’t just studied—they’re manufactured. At first glance, it plays like another indie horror built around a high-concept premise, but Cain’s film manages to stand out thanks to a tight script, stylish execution, and a willingness to explore the darker veins of Hollywood’s underbelly.

The story follows Gemma (Chloe Levine), a young actress trying to carve her way into the industry, who takes a job at Somnium, an overnight sleep program that promises clients their “dreams come true.” Of course, reality is far more sinister. The longer Gemma spends at the clinic, the more she—and the audience—begin to unravel in a world where hallucination and reality bleed together, paranoia runs high, and dreams become nightmares with teeth.

Levine is perfectly cast as Gemma, balancing youthful ambition with growing unease. She’s backed by a strong ensemble: Will Peltz (Unfriended) as a fellow insomniac with secrets of his own, Peter Vack (The Intern) as one of Somnium’s all-too-charming clinicians, and Grace Van Dien (Stranger Things), whose role underscores the disquieting glamour-versus-decay theme that runs through the film.

Cain, who both wrote and directed, brings a confident hand to the material. Her Los Angeles is a city of surfaces—sleek on the outside, rotting underneath—and the dream sequences, shot with a hazy surrealism, capture that tension beautifully. There are echoes of films like A Nightmare on Elm Street and The Neon Demon here, but Cain filters her influences into something distinctly her own: a slow-burn horror-thriller that lingers in the liminal space between dream logic and urban paranoia.

The Prognosis:

Somnium isn’t flawless—the pacing drags in the middle act, and some of the more abstract sequences might test the patience of viewers craving traditional scares. But when it works, it works surprisingly well. By the time the film plunges headfirst into its unsettling final stretch, Cain makes good on her promise: dreams do come true, though rarely the way you expect.

• Saul Muerte

Thanks to Lightbulb Film Distribution, Somnium will be available to rent or buy on digital platforms including Apple TV, Prime Video, and Google TV starting September 10th. For those who enjoy psychological horror tinged with surreal menace and a glimpse into the darker corners of Los Angeles life, it’s worth staying awake for.