Listen free for 30 days

Listen with a free trial

One credit a month, good for any title to download and keep.
Unlimited listening to the Plus Catalogue - thousands of select Audible Originals, podcasts and audiobooks.
Exclusive member-only deals.
No commitment - cancel anytime.
Buy Now for £25.69

Buy Now for £25.69

Pay using card ending in
By completing your purchase, you agree to Audible's Conditions of Use and authorise Audible to charge your designated card or any other card on file. Please see our Privacy Notice, Cookies Notice and Interest-based Ads Notice.

Summary

The stunning novel from the New York Times best-selling author of The Age of Odin, in which the worlds of Arthur Conan Doyle and H.P. Lovecraft collide

It is the autumn of 1910, and for 15 long years, Sherlock Holmes and Dr. John Watson have battled R’lluhloig, the Hidden Mind that was once Professor James Moriarty. Europe is creeping inexorably towards war, and a more cosmic conflict is nearing its zenith, as in a single night all the most eminent members of the Diogenes Club die horribly, seemingly by their own hands. Holmes suspects it is the handiwork of a German spy working for R’lluhloig, but his search for vengeance costs an old friend his life. 

The companions retreat to Holmes’s farm on the Sussex Downs, and it is not long before a client comes calling. Three young women have disappeared from the nearby town of Newford, and the locals have no doubt who is responsible. For legend has it that strange amphibious creatures dwell in a city on the seabed, coming ashore every few centuries to take fresh captives. As Holmes and Watson seek out the terrifying interlopers, the scene is set for the final battle that will bring them face to face with the Sussex Sea-Devils, and perhaps with Cthulhu himself....

©2018 James Lovegrove (P)2020 Blackstone Publishing

What listeners say about The Cthulhu Casebooks: Sherlock Holmes and the Sussex Sea-Devils

Average customer ratings
Overall
  • 4.5 out of 5 stars
  • 5 Stars
    115
  • 4 Stars
    28
  • 3 Stars
    6
  • 2 Stars
    1
  • 1 Stars
    1
Performance
  • 5 out of 5 stars
  • 5 Stars
    119
  • 4 Stars
    22
  • 3 Stars
    1
  • 2 Stars
    0
  • 1 Stars
    0
Story
  • 4.5 out of 5 stars
  • 5 Stars
    99
  • 4 Stars
    30
  • 3 Stars
    9
  • 2 Stars
    3
  • 1 Stars
    0

Reviews - Please select the tabs below to change the source of reviews.

Sort by:
Filter by:
  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars

a little bit silly, thoroughly good fun

while this series does not really tap into the horror of other cosmic properties, you get the feeling that it wasn't going for that.
I thoroughly enjoyed the slightly silly romp from beginning to end.

1 person found this helpful

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars

Thoroughly enjoyable mash-up

A satisfying end to an enjoyable trilogy re-casting Sherlock Holmes stories in a world where H.P. Lovecraft's supernatural writings are more truth than fiction.

  • Overall
    4 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars

Skip the first "chapter"

Make sure to skip the first "chapter" of the audio book: it's an overview of the book that spoils half the plot. The book actually starts one chapter later, beginning with the words "Preface, by James Lovegrove".

I would have given this five stars overall if it wasn't for that. I was lucky to have read some of the other reviews that mention this before I started listening.

  • Overall
    4 out of 5 stars
  • Performance
    4 out of 5 stars
  • Story
    4 out of 5 stars
  • BC
  • 19-11-21

Very entertaining

Some easy-going entertainment. It certainly helped while away the time spent commuting. Not a riveting listen but certainly engaging.

  • Overall
    3 out of 5 stars
  • Performance
    4 out of 5 stars
  • Story
    3 out of 5 stars

erm...

Would have been more enjoyable if half the plot of the book wasn't spoiled in the first chapter. The epilogue and afterword is.... quite a choice.

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars

Brilliant nonsense!

A fine conclusion to this ridiculous trilogy.
ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
Enjoy yourselves

  • Overall
    1 out of 5 stars
  • Performance
    4 out of 5 stars
  • Story
    3 out of 5 stars

Ruined by preface

I’m saddened to report the audiobook’s ‘Chapter 1’ preface outlines the entire plot. Whoever did that should be fired. This audiobook is intended as a mystery.
The written summary’s first sentence had already ruined the previous book by revealing the antagonist of that book - as the books are not numbered it is impossible to read the order of the series without reading the descriptions.
Amateurish.

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars

Beautifully written and beautifully read.

Very much enjoyed the trilogy. The narrator was perfect and the writing style was convincing as that of Watson.

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars

Enjoyed the whole series

Atmospherical and reading in keeping with the best of 'adventures for boys' for all who enjoy the genre.

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars

brilliant read 👏

had me hooked great read enthralled from beginning to end so very good must read

Sort by:
Filter by:
  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars
Profile Image for kevin connolly
  • kevin connolly
  • 16-03-20

BRILLIANT! MY DEAR WATSON!

So! As a big fan of both Lovecraft & Sherlock I think the author has done a fantastic job of bringing them both together.
And as for the narrator.
Well done sir!
I think you have nailed it.
thank you both for a job well done.

2 people found this helpful

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars
Profile Image for Alysha Terry
  • Alysha Terry
  • 07-04-21

so much fun

These stories have been so much fun. There is enough of the horror of Lovecraft to make it interesting, but not enough to give me nightmares. And all of the joys of Sherlock, without being too fantastical. This series was worth the time.

1 person found this helpful

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars
Profile Image for Christopher
  • Christopher
  • 19-03-21

Excellent!

Loved it! Can't wait to start the 3rd one. Luckily I don't have to.

1 person found this helpful

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars
Profile Image for Christine Keen
  • Christine Keen
  • 05-02-21

Fantastic!

The entire trilogy is amazing. well written, great narration, enthralling story. ending does not disappoint!

1 person found this helpful

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars
Profile Image for Diane N.
  • Diane N.
  • 16-01-21

Great!

A great ending to a fascinating series, I loved this book and the previous novels.

1 person found this helpful

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars
Profile Image for Anonymous User
  • Anonymous User
  • 06-10-20

great story

this is one of the best stories I've ever heard it was a great adventure

1 person found this helpful

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars
Profile Image for Anonymous User
  • Anonymous User
  • 05-12-21

Classic and new

This was a great Sherlock story, and a great Cthulhu story. Made modern enough to keep anyone’s interest, it will appeal to both the old fashioned Sherlock fans, and those who are just dipping there toes into the literary world of Sherlock. The Lovedcraftian aspects were just as thoroughly well thought out and presented, making this a masterpiece that needs to be read or heard. I actually think the audio version is better, because the narration lends itself to such a telling.

  • Overall
    4 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    4 out of 5 stars
Profile Image for Bojukana
  • Bojukana
  • 14-10-21

A Nice Closer to a Delightful Series

Here we get to the conclusion of Sherlock and Dr. Watson through their last romp with Ralulaug and Dennis Kleinman brings all the weird names and pronunciations to life. If you enjoyed the first two than this is a fun quick little listen that wont be a waste!

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    5 out of 5 stars
Profile Image for Tim Searle
  • Tim Searle
  • 28-09-21

Very enjoyable

I have 25+ audible books purchased. This trilogy has had me looking forward to the next chapter every time I find time to listen above all the others…

Loved it, the only thing I hated that it was just a trilogy!

  • Overall
    5 out of 5 stars
  • Performance
    5 out of 5 stars
  • Story
    4 out of 5 stars
Profile Image for Todd Bordner
  • Todd Bordner
  • 27-07-21

Written in true Turn of the Century Style

Twists and turns and an elaborate plot as Holmes and Watson take on yet another supernatural villain!! Listen to these over and over again... simply brilliant story writing!