Will's father is coming to town. The tabboo game in the beginning is hilarious. Jack and Karen are casting for a fake play. It's hilarious. Grace runs into George later on in the Opera and notices that George has a mistress. Grace then discusses it with Karen but not giving away the names. Karen then thinks that Stan is having affair instead. Grace decideds to tell Will but Will denies it. Jack and Karen stalk Stan to see if he's cheating. Will, George, Grace, and the mistress have a weird convesation about weather. The episode ends with Karen almost knocking out Tina.