Spiral

Spiral (2007) is a drama, thriller, horror directed by Adam Green rated 6.1/10.

A reclusive telemarketer has only one semblance of a friend: His telecommuter boss. But the telemarketer's social circle seems to improve greatly when a whimsical co-worker enters his life. Only, as he begins to sketch his new friend's portrait, disturbing "voices" from the phone man's past threaten to lead him into a network of destruction.