Someone Is Watching (2000)

Cory is a young boy who has just moved into a new house with his mom. He develops a relationship with an imaginary friend who lives in his closet. No one believes him until people start dying violently and the imaginary friend becomes all too real.
Douglas Jackson, Don Terry, Michel Laforest, Christian Simard, Moushika Mathieu, Zoe Kerrigan
Stefanie Powers, Mickey Toft, Margot Kidder, Stewart Bick, Martin Neufeld, Barry Flatman, Doug Lennox, Pamela Witcher, Angelina Boivin, Tom Rack, Alan Fawcett, Linda E. Smith, Jason Cavalier, Erika D’Alessio, Russell Yuen
tt0203929