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The World's Greatest Detective and Her Just Okay Assistant by Liza Tully

The World's Greatest Detective and Her Just Okay Assistant

by Liza Tully

  • Critics' Consensus (2):
  • Readers' Rating (73):
  • Published:
  • Jul 2025, 400 pages
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There are currently 34 reader reviews for The World's Greatest Detective and Her Just Okay Assistant
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Linda_V

Nuanced and engrossing
Finally someone who sticks to the PI genre!! Both main characters have believable interplays as professional and newbie. The storyline gathers momentum and the ending is a surprise. I could see this being a screenplay and an ongoing series because of the the main characters having a connection. Delightful read.
Linda M. (Ocala, FL)

A New Dynamic Duo
I really enjoyed this book, especially being privy to the inner most thoughts of the hilarious "just okay" assistant. This book was pleasing on several levels. First, the story mostly takes place on the lovely Vermont side of Lake Champlain with lots of descriptions of the scenery and countryside. Second, it's really an intriguing whodunit with interesting characters who lie often and very slowly expose their many secrets. And third, the dynamics and repartee between the detective, Aubrey Merritt, and her assistant, Olivia Blunt, are hilarious. The book reminded me of a good Agatha Christie mystery with all the clues falling into place in a very orderly fashion at the end. Anyone who likes murder mysteries should love this book and its exciting new crime-solving team. I sure hope it's the beginning of a new series.
Margaret S. (Lincoln, NE)

Fun, fun, fun
This book is so entertaining that I didn't want to put it down. Set in LA, the characters are stereo type cinema types gone haywire— a gre at movie star is now an attorney. The unlikely crew of characters set out to solve a murder. Need I say more? It's great fun reading this book.
Carol C. (Troy, NY)

The World's Greatest Detective and Her Just Okay Assistant
I truly enjoyed this cozy mystery! Written from the perspective of Olivia, the "just okay assistant," it chronicles her efforts to help her enigmatic employer determine whether a death was suicide or murder - and thus prove her worth as an apprentice detective. There are enough twists and turns to keep readers guessing as to what happened, and in the process, we learn a lot about Olivia, and almost nothing about the "world's greatest detective.

This, I hope, indicates more adventures are to come, and further clues as to the detective's life and backstory Merritt will be revealed. Perhaps that's the biggest mystery of the book....
Mary_K

Strong Start, Room to Grow
The World's Greatest Detective and Her Just Okay Assistant by Liza Tully is an enjoyable read with some interesting characters. I appreciated the premise and the juxtaposition between Merritt and Blunt — their dynamic has a distinct Devil Wears Prada quality. That said, most of the book's energy is devoted to developing that central relationship and introducing the world for a future series, which means the mystery and supporting characters don't receive the attention they deserve. The supporting cast in particular feels one-dimensional and run-of-the-mill. The ending also overstays its welcome, with Merritt walking through every clue in a way that could have been handled much more efficiently. Overall though, this is a promising start to a series with compelling main characters. With the world-building now established, I hope future installments are better able to focus on the mystery and the characters surrounding Merritt and Blunt. I would recommend this book to anyone who enjoys mysteries, quick reads, and strong female characters.
Jorene_J

The World's Greatest Detective and Her Just OK Assistant
Take a murder mystery party but add two women detectives and you have the making of a murder mystery 2.0. The characters of the 2 women detectives pit an older, seasoned but cranky woman with a younger, aspiring detective-in-training. It's a clash of the generations bonded by a trial apprenticeship of the younger woman who finds it difficult to communicate with her renowned mentor.

I felt that the "murder mystery" was formulaic of many murder stories where there are a slew of potential perpetrators. The story works through all the family members who encircled the victim and a few outer circle friends. Is the ending a surprise? Not really, and it's a story I found tough to hang with initially but grew on me mostly due to the younger woman's voice and her perspective. What if you get the chance to work with the best in the field but find that person to be brilliant and insufferable?
Becky_S

Merritt and Blunt figure it out!
Really liked this modern who dun it and the dynamic duo of Aubrey Merritt and Emily Blunt! The mystery was intriguing but not too violent and the quirkiness of the main characters really kept me engaged in the story line and trying to stay ahead of the mystery. I hope this is the first in a series of mysteries starring these strong women heros!
Holly_Batsell

We Can't All Be the World's Greatest Detective
Aubrey Merritt makes detective work look easy. In fact, she's so good at her work that that she's in demand and needs to take on an assistant to help her get everything done. Enter Emily Blunt, a young news fact-checker who is tying to make her rent and prepare for a wedding to her equally poor fiancée. She thinks she has no chance at working with Aubrey Merritt, but applies anyway. Not only is she hired, but Emily manages to outlast Merritt's prior two assistants by a month when the famous detective invites her on a detecting trip to the Wild Goose resort on Lake Champlain.

The death of matriarch Victoria Summersworth casts a shadow on her stepchildren, workers in the resort, accountant, and recent romantic interest. Olivia knows that she must prove herself to the brilliant detective, but her instincts need some honing. After several botched detecting moves, Olivia finds herself in over her head.

This who-done-it is a slow burn with many characters and suspects, twists, and confounding storylines. The action is believable with only one cliched instance of a hiding character accidentally making a noise that gives them away—a pet peeve of mine. Aside from that, I enjoyed the narrative and character development of the family, but I wished for more relationship building between Olivia and Merritt. Aubrey Merritt is a tough nut and while she does have a soft spot for her protege, she is a critical parent figure to Olivia where she could be more of a mentor.

Still, there is some redemption at the end of the book that is worth the wait and the possibility of another book with the pair continuing to strengthen their working relationship. I would read a sequel to follow their adventures.

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