sentences:  The story involved the reappearance of Robin, who viewers see being held by Ewen Keenan, later revealed to be working for Jerry Jacks.Jerry poisons the town's water supply with the help of Joe Scully, Jr., who is found to be the real killer of McBain's sister.Joe also convinces his son, Trey Mitchell, to marry Sonny's daughter Kristina Davis for revenge.