I'd rate this somewhere between a 3 and 4 if I could. Enjoyable, but not quiet great.

A subtle, almost literary in quality, mystery novel, in 1969 Scotland.

Spoiler

I don't if this is necessarily a spoiler, but I was kind of confused as to why Alex Paton's chapters disappear as soon as be is arrested and Duncan begins his work to prove him innocent of the Quaker's crimes. To me, if we are going to alternate the narration between the two (Duncan and Alex) for the majority of the novel, it is odd that it didn't continue this pattern to the end.