To Die A Stranger has just appeared in paperback from Pro Se Press. It can be found on Amazon US but the Amazon UK link isn't live yet.
It's the first time I've had a physical book out and I shall be ordering some copies as soon as I can. It's been a long time coming - I started writing the Anna & Zenni stories way back in the last century. Hope this first one sells well, as there are lots more books in the series. Volumes 2 to 4 are just about ready to go.