The Disreputable History of Frankie Landau by E Lockhart
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The Murder of Bindy MacKenzie by Jaclyn Moriarty
Both are YA, with the titles so similar. I am a Jaclyn Moriarty fan, so I mostly know the difference, but still, that's pretty similar.
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The Mistress of Nothing by Kate Pullinger
Both of these have been recommended to me, but without knowing either author, those mistresses are mixing me up! (Art of Death is olden times, Nothing is Victorian, I believe)
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The Monsters of Templeton by Lauren Groff
The Monster of Florence by Douglas Preston
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I have both on my wishlist at the library; one is Orange nominated (Groff); one is set in Italy (Florence); both look really good.
What books/authors are mixing you up these days? Do these ones? Have I added to your confusion?