Final answer:
Acrisius tried to prevent a prophecy of his death by locking his daughter Danaë away, but the prophecy was ultimately fulfilled when Perseus, Danaë's son by Zeus, accidentally killed Acrisius.
Step-by-step explanation:
Acrisius, the King of Argos, received a prophecy that he would be killed by his grandson, Danaë's son. To prevent this, Acrisius locked Danaë away in a bronze chamber to keep her from bearing any children. However, Zeus, transformed into a shower of gold, visited her and she gave birth to Perseus. The prophecy ultimately came true, as Perseus accidentally killed Acrisius with a discus throw, demonstrating the theme of fate being inescapable in Greek mythology.