6 Souls (also known as Shelter) is a 2010 horror-mystery thriller that delves into the unsettling world of dissociative identity disorder and supernatural phenomena. Directed by Måns Mårlind and Björn Stein, the film stars Julianne Moore as Dr. Cara Harding, a skeptical forensic psychiatrist whose beliefs are challenged when she takes on a patient, David (played by Jonathan Rhys Meyers), who exhibits multiple personalities. As she investigates further, she makes a horrifying discovery: each of his alternate identities corresponds to a real murder victim, plunging her into a race against time to unravel the truth before she becomes the next target.

The film's strength lies in its atmospheric tension and psychological depth, blending elements of horror and mystery to keep viewers on edge. Julianne Moore delivers a compelling performance as a rational professional grappling with the inexplicable, while Jonathan Rhys Meyers impressively shifts between personas, adding layers of creepiness and intrigue. The direction effectively builds suspense through eerie visuals and a haunting score, though some pacing issues may detract for those seeking constant thrills.

For fans of psychological horror and supernatural thrillers, 6 Souls offers a thought-provoking plot that explores themes of identity, trauma, and the unknown. Its twist-filled narrative and strong performances make it worth watching online for a chilling, mind-bending experience. While not without flaws, the film's unique premise and eerie execution provide enough scares and mystery to satisfy genre enthusiasts.