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 "Seriously Maudie? The mad professor is obviously a boy, had you even seen the movie?" This article contains spoilers. We recommend that you watch the series before reading this article, or if it is not possible, read it at your own risk.
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 "Oh, I mean, the toggle is a bit weird, and I think the comments in our videos would look better on the side, and don't you think that the colour scheme could use an update?" This article is a stub. If you have some information that is useful to the article, add now.
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Harriet Jacobi is a minor antagonist in The InBESTigators. She is portrayed by Isabella Dymalovski.