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 T...




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.