Author Information
Katie Siegel's Latest Book

Newest Release

  • Bibliography:
    3 Books (1 Series)
  • First Book:
    June 2023
  • Latest Book:
    February 2026
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Full Series List in Order

Not a Detective Mysteries

1 - Charlotte Illes Is Not a Detective (Jun-2023)
2 - Charlotte Illes Is Not a Teacher (Jul-2024)

Book List in Order: 3 titles



  • For everyone who grew up wanting to be Harriet the Spy or Nancy Drew, this witty and charming series from a TikTok sensation offers a modern, millennial-friendly spin on cozy mysteries, featuring an irresistible heroine and one-time child detective w...



  • The déjà vu is strong for 25-year-old former kid detective Charlotte Illes when she lands back in Frencham Middle School â€" this time as a substitute teacher with a sideline in sleuthing â€" in the second zany mystery based on the much-loved TikTo...



  • She spent two years in a time loop. Now she’s ready to solve a murder. And maybe grab a bagel. The Seven Year Slip meets Vera Wong’s Unsolicited Advice for Murderers in this wholly original time loop mystery.For the past two years, Amie ...




Frequently Asked Questions (FAQ)

Katie Siegel has published 3 books.

The next book by Katie Siegel, Out of the Loop, will be published in February 2026.

The first book by Katie Siegel, Charlotte Illes Is Not a Detective, was published in June 2023.

Yes. Katie Siegel has 1 series.