What are the motifs in The Cocktail Party by T. S. Eliot?

Mysticism and the supernatural form an important, underlying theme and motif in “The Cocktail Party”. Through the play, Eliot slowly reveals that there are three individuals that seem to have a level of control over what is happening to the other characters, though the level of control or the source of control is never made clear, giving it a mystical or supernatural feeling. There are also direct suggestions that they have a mystic or supernatural power, such as when the unidentified guest tells Edward that if he brings Lavinia back, he will be bringing her back from the dead. His “power” is felt by others as well, and in fact, both Celia and Lavinia mention that he seemed forbidding or scary to them.