Talk about it here.
In 1666, while he was playing chess with Elizabeth, Charles became angry with his father and went to bed. Soon afterwards, the Squire heard a shot from Charles' gun and went to investigate. He found out Charles had fired at a Terileptil and wounded it, and the Squire killed it off with his firearm. However, soon afterwards, the Terileptil android killed him, Charles and Elizabeth. (TV: The Visitation)