Jason and Argonauts: Part V
Apsyrtus was only a child and was in the Argo with his sister. As Aeëtes and the pursuing Colchians gained closer to the Argo, Medea murdered her brother. Medea cut up her brother's body, and threw them in the river. Because of the death of his son King Aeëtes gave up the chase and returned to Colchis, but he sent many others to search for the Argonauts, threatening that, if they did not bring the Golden Fleece and his daughter back to him, they should suffer the punishment due to her...and he planned on punishing her plenty!
On their arrival to Iolcus, Jason discovered that Pelias had made his father, Aeson, commit suicide, which had made his mother die of a broken heart. Pelias died was that Medea tricked Pelias' daughters (except Alcestis), claiming that she had the power to restore Pelias' youth. Medea demonstrated on a ram, where she killed the old ram, cut up the body and put the pieces into a cauldron of boiling water. Weaving her spell, she not only restored the ram back to life, but also made it young again. Hoping to restore their father's youth, the daughters killed Pelias in his sleep and cut up his body. But Medea already left the palace, leaving the daughters horrified that they had been tricked into murdering their own father. Jason took pity on the daughters, prevented them from committing suicide, promising them to find them husbands. This upset the people of Iolcus, and frightened by Medea's powerful magic they chased the couple away.
They settled in Corinth, had two sons and lived happily for ten years. But Jason eventually grew restless, divorced Medea, the "foreign witch" as everybody called her, and took on a younger wife called Glauce, who was the daughter of the King of Corinth.