Eken and Bapi travel to Bolpur for a quick getaway. Shortly after, a murder occurs.
Eken, Bapi and Rupal Mehra see that the red diamond is missing. Meanwhile, Suresh Mitra can't be found anywhere.
Following another death and the discovery of a cryptic clue, the police catch a suspect. But the case is far from closed.
Eken gets some vital information from a surprising source. Inspecting the earlier clue again reflects light on two more suspects.
Eken seems to have cracked the case. A leisurely night walk of Eken and Bapi turns into a thrilling chase.
Eken reveals to Bapi and Rupal the series of events that led to the two deaths.
The much-awaited homecoming for the trio takes a turn when Eken is appointed to investigate a mysterious death in the City of Joy.
Eken, Bapi and Pramatha start interrogating the usual suspects while the city witnesses another murder, thereby setting off a bizarre number game.
Eken becomes desperate to find any connection between Bikash and Tanmoy that can help in cracking the number game. Meanwhile, the killer makes his next move.
While the case gets more complex with mystifying discoveries about Bikash Sen, the killer suddenly changes the pattern of his number game.
The revelation of Bikash's gruesome past leads Eken to untangle a crucial end of the case. Rupal comes back to reveal the main culprit.
Eken makes a shocking discovery about an old unsolved case that unveils the perpetrators.
While exploring the Tungkulung forest with Bapi and Promotho, Eken Babu stumbles upon the dead body of the local king, Shyamsunder Rana.
Eken meets Binoy Prodhan, the estate heir. Things turn suspicious when the late king's lawyer points out the recent changes in his will.
Everyone from the royal family joins Eken's list of suspects, followed by their inconsistent statements. Back in the police station, Eken finds out the motive behind the murder.
When Binoy discloses the menacing behaviour of Shyamsundar Rana's business partner, Shaibal Babu, it throws light on a new angle of the mystery.
Although police trace Binoy's phone location near the death spot, Eken discovers a deadly conspiracy rooted in decades-old secrets and a precious diamond's history.
When Eken Babu becomes determined to know more of Binoy's past, a startling revelation comes to the fore.
Eken Babu arrives at the royal palace to unmask the killer. But will he divulge the invaluable thing that the killer was craving?
