When is Mary Anne's bad luck going to end?

The Baby-sitters Club #17: Mary Anne's Bad-Luck Mystery

I don't really get Halloween. I mean, I enjoy a good masquerade ball as much as the next girl (actually, I've never been to a masquerade ball, but I have no doubt that I would enjoy it very much, should I ever achieve my dream of travelling back to 1868 and actually getting to attend one.) And of course, I like candy far more than I probably should. What don't I like? Any day that exhorts the vast majority of the world's children to act even more like spoiled, entitled little brats than they normally do any day of the week. Any day where I am encouraged, nay, expected to dress up like Donatella Versace and squeeze into a subway car shared with a gorilla, 6 women wearing pointy black hats, and a fat guy in an orange sweatsuit who I think is supposed to be a pumpkin, but might just be a fat guy with very little fashion sense. Any day where the grocery store cashier ringing up my loaf of bread and 12-pack of Diet Coke is likely to be wearing any of the above costumes. Halloween is when the freaks come out. And I have very little patience with freaks.

But here we have arrived at a BSC Halloween, no doubt the first of many in their never-ending 8th grade year (actually, I can't think of any others at this moment, but given that they went to SMS for, like, 15 years, I'd say it's probably a pretty safe bet they celebrated other Halloweens!) Mary Anne receives a chain letter saying she and her family and friends will have bad luck if she breaks the chain. Jessi and Mal are terrified, but no one else really gives a shit. Mary Anne throws the letter away.