With the help of Thallo (Tim Pigott-Smith), Perseus presents himself as a suitor and correctly answers the riddle, presenting Calibos' severed hand and winning the hand of Andromeda in marriage. When Calibos finds his mother cannot act against Perseus, he commands her to take vengeance on Joppa. When Cassiopeia compares her daughter's beauty to that of Thetis', the enraged goddess demands that Andromeda must be sacrificed to the Kraken or Joppa will be destroyed. 