15 year-old Alejandro Duran, who comes from a religious Latino family, aspires to one day be a Catholic priest. But when Alex discovers a mysterious box he unwittingly unleashes a demonic spirit bent on possessing him. Alex must find a way to defeat this ancient demon, which has been tormenting children since the dawn of man, before it destroys him and everyone he loves. On the surface Devil's Whisper is a supernatural horror film about demonic possession but at its core it's a psychological thriller about repressed memories, childhood trauma and the cycle of abuse.

A young girl (Mary) and her family move into a new home along with her Grandmother. The Family have recently been recovering from the loss of their daughter (Jennifer). During the family's stay, They are attacked by the spirit of Jennifer, mostly taunting Mary. The family are subject to Mary being under the influence of Jennifer and are slowly picked off one by one.

The Freeling family move in with Diane's mother in an effort to escape the trauma and aftermath of Carol Anne's abduction by the Beast. But the Beast is not to be put off so easily and appears in a ghostly apparition as the Reverend Kane, a religeous zealot responsible for the deaths of his many followers. His goal is simple - he wants the angelic Carol Anne; but the love of her family and the power of psychic Tangina once again unite, along with an elderly native American, to fight for her life.