[sufue]

Stalin's Ghost is the 6th in the Arkady Renko series by Martin Cruz Smith. It is free right now at Kindle UK. This is highly unusual for a mainstream Simon & Schuster title to be totally free, so I'm wondering if it's a pricing error. (It has been on sale before, just not free...) Anyway, I'd jump on it if you think you might ever want it!

link: https://www.amazon.co.uk/dp/B00CWEHRYY

Spoiler:

Once the Chief Investigator of the Moscow Militsiya, Arkady Renko is now a pariah of the Prosecutor's Office and has been reduced to investigating reports of late-night subway riders seeing the ghost of Joseph Stalin. Part political hocus-pocus, part wishful thinking - even the illusion of the bloody dictator has a higher approval rating than Renko. After being left by his lover for a more popular and successful detective, Renko's investigation becomes a jealousy-fuelled quest leading to the barren fields of Tver, where millions of soldiers fought, and lost their lives. Here, scavengers collect bones, weapons and paraphernalia off the remains of those slain, but there's more to be found than bullets and boots.