Big Finish productions are a weird animal. Due to the small but dedicated fan base risks can be taken and you often find a lot of pockets of fans advocating some of the crazier releases, which invariably, perhaps to my detriment, I don't enjoy.
This is not a crazy release, well it is, but it's your typical, beautifully walking the line Doctor Who kind of crazy.
The story its self is rather dark and very much in the stlye of seasons 22/26 from the classic series. The mysteries are suitably well established and it's highly unlikely you'll see the end twist coming (but fortunately this isn't a case of a writer struggling to explain their bizarre build up, everything does, quite impressively, fall into place). Good atmosphere and some great production quality.
Whilst some of the extras are somewhat unimpressive the performances from Baker and Stables are superb.
It's not an absolute classic, if I could give half stars then it would be 4.5, but it's damned close.