Thank you to southeast for the new thread!
My list so far:
- Sofi Laporte - Lucy and the Duke of Secrets
- Emma Orchard - What the Lady Wants
- Darcy McGuire - The Secret Life of a Lady
- Darcy McGuire - A Lady's Lesson in Scandal
- Lynn Morrison & Anne Radcliffe - The Missing Diamond
- Lynn Morrison & Anne Radcliffe - The Ruby Dagger
- Lynn Morrison & Anne Radcliffe - The Sapphire Intrigue
- Lynn Morrison & Anne Radcliffe - The Emerald Threads
- Darcy Burke - A Whisper of Death
10. Darcy Burke - A Whisper at Midnight
11. Emma Orchard - For the Viscount's Eyes Only
12.
Jodi Taylor - Lights! Camera! Mayhem!
13.
Agatha Christie - Five Little Pigs (audiobook)
14.
Andreina Cordani - Murder at the Christmas Emporium
15. Rhys Bowen - We Three Queens
16. Lesley Cookman - Murder in the Green
17. Lesley Cookman - Murder to Music
18. Enid Blyton - Five Go Down to the Sea
19. Agatha Christie - Three Act Tragedy (audiobook)
20.
Jess Armstrong - The Curse of Penryth Hall
21.
Jess Armstrong - The Secret of the Three Fates
22. Mel Mcgrath - The Guilty Party
23. Neal Shusterman - All Better Now
24.
Sarah Dunnakey - The Twelve Murders of Christmas
25. Wendy Cross - Then There Was One
26. Julia Golding - The Persephone Code
27.
Jodi Taylor - The Ballad of Smallhope and Pennyroyal
28. Michelle Kenney - The Mismatch of the Season
29. Jo Jakeman - One Bad Apple
30. Katy Watson - Seven Lively Suspects
31. Ann Russell - How to Save Money
32. Enid Blyton - Five go to Mystery Moor
33. Danielle Valentine - Two Sides to Every Murder
34. Nick Louth - The Two Deaths of Ruth Lyle
35. Nick Louth - The Last Ride
36. AK Benedict - Little Red Death
37. Melinda Salisbury - The Foundation
38. RO Thorp - Death on Ice
39. Anthony Horowitz - Close to Death
40. Ben Carpenter - Fat Loss Habits
41. Rory Cellan-Jones - Sophie from Romania
42.
Jonathan Stroud - The Legendary Scarlett & Browne
43.
JM Hall - A Brush with Death
44.
Ben Aaronovitch - Rivers of London
45.
Sophie Irwin - A Lady's Guide to Scandal
46.
Laura Woods - The Agency for Scandal
47.
Laura Woods - A Season for Scandal
48.
Laura Woods - A Game of Scandal
49. Karen M McManus - Such Charming Liars
50. Agatha Christie - Dead Man's Folly (audiobook)
51. Agatha Christie - The Thirteen Problems (audiobook)
52. Agatha Christie - The Murder of Roger Ackroyd (audiobook)
53. Agatha Christie - The Labours of Hercules (audiobook)
54. Julia Golding - The Elgin Conspiracy
Most of the bold reads are easy reading TBH, as my mind is too full of stuff I need to do to take anything too strenuous 
Special shout outs to All Better Now and Then There Was One - both YA books which were a little bit short to qualify as bolds for me, but clever concepts. All Better Now is about a virus which leaves people full of contentment and unable to do anything unpleasant to others - how would the world cope? What will happen to the people who've had the virus when confronted by those who haven't, and are still capable of nastiness/ cruelty/ thoughtlessness? Is a lack of empathy necessary in some cases to keep economies going? - these sort of questions were mooted but not really dealt with. And Then There Was One is a futuristic retelling of And Then There Were None with a bit of Hunger Games thrown in - again an interesting concept but not quite long enough to go into things in depth.
The Legendary Scarlett & Browne is the last in a trilogy by the author of the Lockwood & Co books (which I love!), I raced through this so will re-read it and enjoy it more at my leisure - Scarlett McCain and Albert Browne are outlaws in a dystopian future Britain, now searching for Scarlett's long lost brother. I really enjoyed this and am sorry there won't be any more 
DNF - Richard Osman - We Solve Murders - thought it was immensely dull (annoyingly, as I'd waited for ages for it on the library app!) and *Amy Tintera - Listen for the Lie) - just didn't get it, TBH.
@ChessieFL I currently have The Sirens on the go but am finding it tricky to get into! I quite enjoyed Little Red Death but reading the reviews, I feel there were layers of cleverness which I completely failed to perceive 
@Tarragon123 you've just reminded me that I still have Square of Sevens on the go, I think I got to around 300 pages and lost interest - must try to finish it!
@WelshBookWitch I used to love those Kate Mosse books, picked one up recently and couldn't get into it at all
probably because I have a lot less time to read since having DC, things need to grab me straight away.
@AgualusasLover I started listening to Agatha Christie audiobooks as part of the Christie readalongs, enjoyed them far more than I thought and have carried on! Completely agree about it being dependent on the narrator - strangely I prefer Hugh Fraser (Hastings) to David Suchet reading them, I think I can't get my head round David Suchet not actually being French...
@SheilaFentiman I think The Report is about the same accident as Millie Bobby Brown - Nineteen Steps? I hadn't heard of it before but thought the MBB book did a good job of describing what it was like for the local people (I believe her DGM grew up around there) - I'll definitely have a look for The Report too.