Amphitryon or Amphitruo is a Latin play for the early Roman theatre by playwright Titus Maccius Plautus. It is Plautus’s only play on a mythological subject. The play is mostly extant, but has a large missing section in its latter portion. The plot of the play involves Amphitryon’s jealous and confused reaction to Alcmena’s seduction by Jupiter, and ends with the birth of Hercules. There is a subplot in which Jupiter's son Mercury, keeping watch outside the house while his father is inside, has fun teasing first Amphitryon's servant Sosia, and then Amphitryon himself. The play is thought to be relatively late in Plautus's works, probably from the period 190–185 BC. One indication of this is the large amount of sung verse. Another is the description of Alcumena in line 703 as a bacchant, which may be connected with the Senate decree on Bacchanalia of 186 BC. The mention of another play in lines 91–2 may be a reference to Ennius's play Ambracia of 188.The character Mercury describes this play as a tragicomoedia (lines 59, 63). One theory is that Plautus based his play on a Greek tragedy, such as Euripides Alcmene, turning it into a comedy by additions of his own; however, this is not certain. Source: Wikipedia (en)