One more Ngaio Marsh/Roderick Alleyn title on sale from Felony & Mayhem press right now, the eleventh one,
Death and the Dancing Footman. Kindle US only, at least as of now, not Kobo US.
Kindle US:
https://www.amazon.com/gp/product/B00BI8CCF4/
Kindle US/Smile:
https://smile.amazon.com/gp/product/B00BI8CCF4/