Hard blend
The Atrocity Archives is pretty enjoyable if you’re part of the vanishingly small target audience. I like espionage novels, and I’m a computer geek who knows a fair bit about the history of the field, and I like H.P. Lovecraft, so the book worked for me. But man, it’s dense-pack fiction. You need to know who Turing was and it helps to understand what a device driver is and you ought to be steeped in sysadmin/programmer culture and the espionage bits build on the work of Le Carre and Len Deighton. ...