If you're into espionage (well, reading about it anyway), we've interviewed quite a few experts on the best spy books…

By marble-chilly

I just started reading the Slow Horses books by Mick Herron, and I’m already hooked. It’s basically about this drunk, overweight, really old Cold War guy running a bunch of total mess-ups, while the new, flashy MI-5 seems like they’d rather just make them vanish.