Main •
Victoria Pedretti as Danielle "Dani" Clayton, a former executive assistant to Henry Wingrave who frequently visited Bly Manor before Dani's arrival. His ghost continues to haunt the mansion's grounds. •
Amelia Eve as Jamie Taylor, Bly Manor's dry-witted gardener and Dani's love interest. •
Carla Gugino as Older Jamie / The Storyteller, who recounts the events of the series to the guests of a wedding in Northern California in 2007. •
T'Nia Miller as Hannah Grose, Dani's deceased predecessor who began working at Bly Manor a year before Dani's arrival. Rebecca was in a romantic relationship with Peter Quint prior to her death. •
Amelie Bea Smith as Flora Wingrave, Miles and Flora's estranged uncle who hires Dani as an au pair at Bly Manor. •
Duncan Fraser as Older Henry / The Father of the Bride
Recurring •
Alex Essoe as Charlotte Wingrave, Miles and Flora's late mother. •
Matthew Holness as Edmund "Eddie" O'Mara, Dani's fiancé who died in a car accident prior to her move to London. Eddie's ghost continues to haunt Dani in the present day as a manifestation of the guilt she feels for his death. • Daxton Gujral as Young Eddie •
Kate Siegel as Viola Willoughby-Lloyd, heiress and original owner of Bly Manor centuries ago. • Daniela Dib as The Lady of the Lake • Katie Parker as Perdita Willoughby-Lloyd, Viola's younger sister. •
Greg Sestero as the Fiancé / James • Calix Fraser as Doll Face Ghost • Liam Raymond Dib as the
Plague Doctor Guest •
Jim Piddock as Father Stack •
Lynda Boyd as Judy O'Mara, Eddie's mother. •
Teryl Rothery as Karen Clayton, Dani's mother. • Lizzy McInnerny as Elspeth, Peter's mother. • Martin McCreadie as Arthur Lloyd, Viola's husband who initially courts Perdita. ==Episodes==