I keep meaning to finish all the Brother Cadfael books and keep failing. Then I discovered that the author had written other fictional works and I realized that I needed to challenge myself to read these too... and somehow hold myself accountable. 
This challenge is to encourage me and others like me to finish Pargeter/Peters' books. This challenge has no time limit.
I tried to put all the books in chronological order, but gave up when I realized how much material Pargeter/Peters has. The books are chronological within their series.