The Ian Rutledge Starter contains, oddly enough, four books in the Ian Rutledge series by Charles Todd. But not the first four as you'd kind of expect, given the title. Instead, it has the first book (which won/was a finalist for a ton of awards), and then the eight, ninth, and tenth books. Go figure!
But in any case, it's on sale right now for $3.99 in the US, which is a great price if you need them all, and not bad even if you only need a couple.
The Ian Rutledge Starter contains
A Test of Wills,
A Long Shadow,
A False Mirror, and
A Pale Horse
Kindle US:
https://www.amazon.com/dp/B00M719VZ0
Kobo US:
https://www.kobo.com/us/en/ebook/the...tledge-starter