Spencer Theatre Company presents “Blithe Spirit.” Charles Condomine, a successful novelist, has invited friends to the lavish estate he owns with his second-wife, Ruth, to witness a séance which he hopes will debunk what he believes to be superstitious nonsense. Unwittingly, he’s invited a very real medium, Madame Arcati, to conduct the evening’s ritual and, in doing so, unleashed the spirit of his first wife, Elvira, on the house. Impeccably clever, Noël Coward’s “Blithe Spirit” is ripe with wit and charm leaving audiences full of laughter.