Dark Angel picks up directly after Heaven finds a new life in her estranged grandmother and grandfather, Jillian and Tony Tatterton's 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.

Gates of Paradise quickly turns tragic when Heaven's daughter Annie finds herself orphaned and crippled. Whisked off to Farthinggale Manor by Tony Tatterton, Annie pines for her lost family, especially for her half-brother Luke. Without the warm glow of Luke's love, she is lost in the shadows of despair and forced into submission by Nurse Broadfield. When Annie discovers a cottage hidden in Farthinggale's woods, the mystery of her past deepens. Even as she yearns to see Luke again, her hopes and dreams are darkened by the sinister Casteel spell.