Summerland - Hannu Rajaniemi

I burned through it . . . Great book: Tinker Tailer Soldier Spook' Ian McDonald

Loss is a thing of the past. Murder is obsolete. Death is just the beginning.

Since the discovery of
the afterlife, the British Empire has extended its reach into
Summerland, a metropolis for the recently deceased.

But Britain
isn't the only contender for power in this life and the next. The
Soviets have spies in Summerland, and the technology to build their own
god.

When SIS agent Rachel White gets a lead on one of the
Soviet moles, blowing the whistle puts her hard-earned career at risk.
The spy has friends in high places, and she will have to go rogue to
bring him in.