who are the main characters in it ?
Sartaj Singh and Ganesh Gaitonde
Sacred Games (novel)
he only Sikh police officer in the city, Inspector Sartaj Singh, is seemingly invited to pursue Mumbai's most legendary crime boss Ganesh Gaitonde. 
when is scared games season 2 coming out 21 September 2018 what is it ? Sacred Games is an Indian crime thriller web television series based on Vikram Chandra's 2006 novel of the same name. when was the above mentioned novel written ? Published in 2006
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Sacred Games (novel) [SEP] Premise
"Sacred Games" runs mostly on two parallel tracks. One winding through the criminal underworld of Mumbai (then Bombay) in the 1980s and 1990s, and the other through a tense modern-day hunt for the explanation behind a notorious dead gangster's bizarre final words. The only Sikh police officer in the city, Inspector Sartaj Singh, is seemingly invited to pursue Mumbai's most legendary crime boss Ganesh Gaitonde. Gaitonde reveals a harrowing timeline and a few hints of the identity of his collaborators before taking his own life.