The Herring in the Library is the third in LC Tyler’s Ethelred and Elsie series. I haven’t read this one, but I read and loved the latest book in the series, Farewell My Herring – you can read my review here. I’m now half-way through the first book in the series, and enjoying it, so I’m happy to see this third one go on sale for $1.99 at Kindle and Kobo US (and discountable at Kobo).
And now the first in the series, The Herring-Seller’s Apprentice, is on sale for $1.99 at Kindle US, and at Kindle UK for £1.89. Not on sale at Kobo US, at least as of now.
Buy at Kindle US: https://www.amazon.com/dp/B018HQF5KI
Buy at Kindle UK: https://www.amazon.co.uk/dp/B00N6WTYA6
Crooked Herring is the fifth in the series. It’s on sale right now at both Kindle and Kobo US, and it’s discountable at Kobo!
Kindle US: https://www.amazon.com/dp/B018HQF5SA
Kobo US: https://www.kobo.com/us/en/ebook/crooked-herring-3
Ten Little Herrings is the second in this series, and it’s on sale today at Kindle US for $1.99.
Kindle US: https://www.amazon.com/dp/B018HQF5IU
Herring on the Nile is the fourth in the series. It’s $1.99 today at Kindle US: https://www.amazon.com/dp/B018HQF5TY
The Herring in the Library is $1.99 in the US again today. The links in the OP are still good.
Ten Little Herrings is on sale again for $1.99 in the US. The Kindle link a few comments up is still good. And this time it’s also on sale at Kobo US, where it’s also discountable: https://www.kobo.com/us/en/ebook/ten-little-herrings-5