TR-49 review – a code breaking puzzle game where you get all up in some dead authors' gossip

I am in the dusty basement of Manchester cathedral. On the streets above me, there are police searching for anyone who would challenge the state. Someone like me. I am supposed to be working on a weapon to use against these fascists. It isn't a gun or a bomb, it is a machine that eats books.

At least, that's what I should be doing; instead, I'm searching for the final letter between the members of a love triangle of 1950s academics. I've tracked down all their trashy novels and papers on temporal dynamics...