The Invitation (2022)

After the death of her mother and having no other known relatives, Evie (Nathalie Emmanuel) takes a DNA test...and discovers a long-lost cousin she never knew she had. Invited by her newfound family to a lavish wedding in the English countryside, she's at first seduced by the sexy aristocrat host but is soon thrust into a nightmare of survival as she uncovers twisted secrets in her family's history and the unsettling intentions behind their sinful generosity.—Official synopsis