The Evil Guest is a Gothic horror novel by Joseph Sheridan Le Fanu, first published in 1851. The story centers on the Marston family, particularly Richard Marston, who faces financial difficulties and familial tensions exacerbated by the arrival of his wealthy cousin, Sir Wynston Berkley. Set in the decaying manor of Gray Forest, the novel explores themes of jealousy, betrayal, and the strain of hidden emotions within the family, particularly involving the enigmatic French governess, Mademoiselle de Barras.
