Here Comes the Bride (1) (S02E01)

Aunt Esther moves in to keep an eye on her son Cliff, convinced that Fred's influence is dragging his grades down. She interrupts a kiss between Fred and Evelyn, hurling insults at Evelyn and calling Fred a "disgrace" to Elizabeth. Meanwhile, Cal discovers Fred's marriage license and informs him that he and Esther are technically married. It turns out that Elizabeth mistakenly signed as a witness while Esther signed as the bride. This mix-up brings a lawyer to inform the "newlyweds" that they need to return to Missouri to correct the situation.