“Dark Angel” picks up directly after Heaven (Annalise Basso) finds a new life in her estranged grandmother and grandfather, Jillian (Kelly Rutherford) and Tony Tatterton’s (Jason Priestley) exquisite Boston mansion, Farthinggale Manor. But even in the world of the wealthy, there are strange forebodings, secrets best forgotten. As Heaven reaches out for love, she is slowly ensnared in a sinister web of cruel deceits.