Book Review: Murder Theory by Andrew Mayne

I received a review copy from the publisher. This does not affect the contents of my review and all opinions are my own.

Murder Theory by Andrew Mayne

Mogsy’s Rating: 4.5 of 5 stars

Genre: Mystery, Thriller

Series: Book 3 of The Naturalist

Publisher: Thomas & Mercer (February 5, 2019)

Length: 318 pages

Author Information: Website | Twitter

The crime mystery and thriller genres are full of protagonists who claim they will go to any lengths to stop a killer, but computation biologist Dr. Theo Cray will give them all a run for their money in this totally insane and off-the-wall third volume of Andrew Mayne’s Naturalist series. Once more our hero is on the trail of a serial killer, but this time, he may have met his match. You might even say that Theo is hunting for a dark version of himself, a difficult quandary that forces him to confront some uncomfortable truths about his own psyche.

Shortly after the events of Looking Glass, Theo has resumed his work on top secret projects for the government. However, the repercussions of his last investigation haunt him still. One day, he is approached by an FBI agent whose colleagues had been working on the site of where Theo had tracked down his last target, which was also where the murderer had buried all his victims’ remains. Now two of the agents are dead, and a third one is missing, presumably having gone on the run after killing the others. But when they catch the suspect, the man appears in shock with no memory of what happened. His erratic behavior, and the fact that those closest to him say they can’t even recognize him as the same person they once knew, led to MRI scans of his brain. And the results are terrifying.

Now Dr. Cray finds himself faced with the prospect of a literal mad scientist who is using their vast genius and knowledge to kill. Whoever it is, they’re also an expert in virology and pathological behavior, as well as a master at concealing their identity and not getting caught. And, Theo fears but is loath to admit, they might even be smarter than him.

Our protagonist has always been a driven man, motivated by problems to solve because they allow him to design models and exercise his intelligence, not to mention his work also saves lives and puts murderers out of commission. This time though, his ego is also a major driving force, and while he may be cognizant of the fact, his competitive streak stills gets him into all kinds of trouble. Of course, Theo being Theo, he’s no stranger to trouble, and half the fun of these books is watching him try to mentally MacGyver himself out of some super tight spots.

Things do take a slightly dark turn though, as Theo is pushed to the limits. Our boy takes vigilantism to a whole other level in this one, and if you thought his law-flouting and risk-taking was extreme in the previous books, just wait ‘til you see what he does here. There’s a lot I love about this series, including the thrilling action and fascinating science, but a big part of the enjoyment is also in watching the main character grow over time. In The Naturalist, Theo was a fledgling serial-killer hunter whose naivete was a weakness that almost became the death of him. As a result, he hardened his heart in Looking Glass and welcomed the darkness. By the end of Murder Theory, however, we may be witnessing another change in Theo as he realizes he may have taken things a little too far and that his by-any-means-necessary attitude might be swiftly leading him down a dangerous path.

For this reason, I highly recommend starting the series from the beginning, though one could probably get away with reading Murder Theory as a standalone. A thing to note is that the book does make many references to Theo’s past investigations, in essence forming a thematic link between the serial murder cases in each book that only someone familiar with all three can fully appreciate. Plus, these books are just so much fun, it would be a shame to miss any of it by jumping in at a later point. I continue to be impressed by the scientific aspects, as well as Theo’s knack for spotting patterns in the data. Mayne’s storytelling is also once again on full throttle in this fast-paced no-stops thrill ride boosted with plenty of humor and straight up crazy twists.

That said, Murder Theory probably wasn’t my favorite of the series (an honor that still belongs to Looking Glass) due to a couple minor faults. One, I found the early parts too heavy on the scientific jargon. Two, this book didn’t make me laugh nearly as much as the previous ones did! I guess I’m just going to chalk it up to the darker, more macabre direction of the story. And three, though technically this isn’t a real criticism, I found it way too short. Talk about leaving me wanting more; this was a book hangover that hit me even before I could finish! It’s no exaggeration when I say I would have happily gone for another hundred pages or two following Theo on his pursuit of the killer, and I was practically distraught when the book ended, because damn, that last line!

What more can I say, but I just loved this. I love this series. I love Theo Cray. Yes, things can get a little bonkers sometimes, but that’s what makes these books so amazing. Every time I pick up something with Andrew Mayne’s name on the cover, I know I’ll be in for a hell of a good time, and he hasn’t let me down yet. Can’t wait for the next one.

More on The BiblioSanctum:
Review of The Naturalist (Book 1)
Review of Looking Glass (Book 2)

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27 Comments on “Book Review: Murder Theory by Andrew Mayne

  1. I’m just loving this series. This one wasn’t my favourite of the bunch either but it’s still so good and definitely takes a darker tone and has Theo actually reflecting a little on his actions. – and damn. that finish!
    Lynn 😀

    Like

  2. “half the fun of these books is watching him try to mentally MacGyver himself out of some super tight spots.”

    Well, that line pretty much sold me on this series. I hope I can remember to add it to my tbr when the next book comes out…

    Like

  3. I’ve only heard really good things about this series and while I’ve never really considered picking them up, your review does have me curious. Great thoughts and the fact that the third book can get such a high rating must indicate that the series is pretty strong.

    Like

  4. Pingback: My Good Reading Habits Tag – Siobhan's Novelties

  5. It’s not uncommon to read comments about a book feeling too long, while it’s less frequent to hear a reader say, as you did, that the book ended too soon: this might very well be the best compliment you could pay to this series – and a powerful endorsement, as well…
    Thanks for sharing! 🙂

    Like

  6. Pingback: Mogsy’s Bookshelf Roundup: Stacking the Shelves & Recent Reads | The BiblioSanctum

  7. You got me hooked on this series and now I recommend Theo Cray to all my people👏🏼
    On a separate note, did you consider judging in the SPFBO contest this year? Your reviews are truly spot on. Thanks

    Like

    • Thanks, I’m so glad I got to help spread more love for Theo, LOL! 😀

      And I was asked to judge SPFBO but had to decline because of the time commitment required. I haven’t been able to partake for the last couple years now, because just too busy 😦

      Like

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