Here is a round up of my favourite detective novels - including those with actual sleuths and those where as a reader you're invited to do some sleuthing of your own.
The Moonstone by Wilkie Collins
Will I ever stop talking about Wilkie? Not likely. Sargeant Cuff (and his roses) happens to be one of my favourite literary detectives.
The Unpleasantness at the Bellona Club/Busman's Honeymoon by Dorothy L. Sayers
Ah Peter Wimsey, you may almost certainly be suffering from PTSD but you still manage a jolly good show. It's hard to say quite how much I adore Dorothy L. Sayers.
The Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson
This is one that is not technically detective fiction (the lines are a bit blurry), but there is still an investigation. Plus it's super creepy. As a side recommendation, it's definitely worth reading Mary Reilly by Valerie Martin.
Anything involving Miss Marple
My love for Agatha Christie was well and truly rekindled this week by And Then There Were None. I don't actually remember reading any of her works that don't involve Miss Marple (who, though at times a giant pain, I do love), so I feel it's time to spread out and enjoy some Poirot too (let me know where to start!).
The Hound of the Baskervilles
No list would be complete without England's favourite addict detective, Sherlock Holmes. The Hound is one of my favourites purely because of its setting (hello scary moor I spent a lot of time on as a teen).
Case Histories by Kate Atkinson
Jackson Brodie is my favourite contemporary detective. Especially when he is played by Jason Isaacs in the BBC series.
Talking About Detective Fiction by P.D. James
I studied Dorothy L. Sayers at uni and read this to get a bit more information about the genre. It's a really good non-fiction read, both for study and personal interest. I really enjoyed the section on the Golden Age (obviously).
The One(s) to Read:
The Big Sleep by Raymond Chandler
I just feel it's a must.
One of the Albert Campion mysteries by Margery Allingham
I can't deny that I love a good gentleman sleuth.