Summary (Masterplots, Fourth Edition)  Amphitryon, a Theban,
joins the army of Thebes to fight against the Teloboans. When he
leaves for the wars, his wife Alcmena, daughter of Electryon, is
pregnant. Nevertheless, in the absence of Amphitryon, Jupiter
falls in love with Alcmena and decides that he must enjoy her
favors. Disguising himself as Amphitryon, Jupiter appears to
Alcmena as her husband, just returned from a battle with the
Teloboans. Alcmena is unable to recognize the impostor and
welcomes Jupiter as her husband. Because Jupiter wishes to enjoy
Alcmena as long as possible, he has the sun, moon, and stars
remain fixed, and so the night he spends with Alcmena is long
enough for her to conceive and be ready to bring forth a child
by Jupiter at the same time she gives birth to the child by her
husband.  In the meantime Amphitryon’s ship returns to Thebes.
It is still night, so Amphitryon’s slave, Sosia, fearfully
walking the streets of the sleeping town, tries to console
himself with the pleasantness of