"A Shot in the Dark"

This already has a strike against it being a sports episode, but then the plot gets muddled and there are some definitely creepy moments, so it earns the first D+ of the series.  The whole thing of Sheena tricking a very gullible Richie to meet her at Arnold's right before the game is dubious, but then when Fonzie tells Sheena that he'll fight the guys from Fillmore High (incidentally Laverne and Shirley's alma mater) and deal with her alone, I know it's meant to be seductive, but it sounds a bit rapey.  Then the whole thing of her slavishly doing what he says and him "retraining" her to be loyal to Jefferson High adds to the creepiness.

Notes:

• The Lifesaver joke at the end was then very topical, as the audience's reaction suggests.
• There's yet another Arlene character with long, blonde hair, but this time it's someone Ralph is interested in.
• And speaking of girls with long, blonde hair, it looks like Jill Higgins, the Charlene Tilton character, is no longer on the cheerleading squad, although Joanie is.  (And Howard tells her to pull down her skirt, which I'm sure means to lower her hem but still is another creepy moment.)
• Suzanne Wishner, who plays Colette, would be back in '80 as Vanessa.
• David Ketchum, who both wrote for and acted on HD, here is Coach Pelino.
• Steve Zacharias's writing partner here, Fred Fox, Jr., would not only write 28 more HD scripts, all the way into Season Eleven, but he would make some onscreen appearances as bellhops on Blansky's Beauties and Laverne & Shirley, as well as play Freddie on HD in '79.  (Whether that's also a bellhop remains to be seen.)