The City & the City - by China Miéville

Not sure if this group is still active but if it is, I've just started this book so suggesting it if anyone cares to meet up and chat about it.

Synopsis: Inspector Tyador Borlú of the Extreme Crime Squad finds deadly conspiracies beneath a seemingly routine murder. From the decaying Beszel, he joins detective Qussim Dhatt in rich vibrant Ul Qoma, and both are enmeshed in a sordid underworld. Rabid nationalists are intent on destroying their neighboring city, and unificationists dream of dissolving the two into one.