A review by muggsyspaniel
It Walks by Night by John Dickson Carr

4.0

I'm not sure why I never read anymore of the Henri Bencolin series, I enjoyed this one a lot.
It's a locked room mystery a sub genre of which John Dickson Carr is considered by many to be the master.
This had an enjoyably old fashioned feel with hints at the supernatural before everything is very precisely resolved in an entirely posible (if not believable) fashion.