Ep 20. Boyd, Here Comes the Flood

Gram-Gram becomes a T/A at Alcatraz, in Pelswick's class. At first she's an unholy embarrassment and Pelswick dreads going to class. But then she wins over the class - and the school - with her fascinating (if bizarre and contradictory) recollections of the cataclysmic Bayview Flood. Of course at the end they find out Gram-Gram managed to make fun because everything she remembered was wrong.