The story hinges on the idea that a phantom was sent to Troy, while the title character went to Egypt.  
In the opening scene of this work, the title character tells of how a king married a sea-nymph named Psamante after Aeacus finished with her, and notes that a princess named Eido had her name changed upon reaching puberty.  In response to a threat, another female character in this work claims to have learned that her husband died at sea, and asks to be allowed to give him a proper burial before marrying the king, Theoclymenus.  When the king realizes that he has been deceived he tries to kill his sister, Theonoe, but she is saved when the Dioscuri descend to earth and explain that the two Greeks were destined to return home together.  The story hinges on the idea that a phantom was sent to Troy, while the title character went to Egypt.  FTP, name this play which first appeared in 412 BC, a work by Euripides about the wife of Menelaus.
In the opening scene of this work, the title character tells of how a king married a sea-nymph named Psamante after Aeacus finished with her, and notes that a princess named Eido had her name changed upon reaching puberty.  
Helen