Iron Biscuits - Kamal Babu comes to Byomkesh for help, he is living in a rented house whose owner has fleeced on account of his involvement in a murder case. Kamal babu wants to travel outside town but feels that on doing so will lose hold of "his" property. Seems like an innocuous case? but the mystery deepens. An ingenious piece of work with an even ingenious method of hiding and retrieving smuggled gold.
The Crooked Circle - An unscrupulous crook threatens a money lender with dire consequences, fearing for his life the moneylender goes into shock and becomes paralyzed. Some time later the crook is found murdered. While everyone starting from the Police to Byomkesh suspect the money lender but they can'y figure out how the neurotic paralyzed man did it.
Those Spoke Kavi Kalidasa - A rich coal mine owner, Manish Babu, hires Byomkesh to investigate incidents of troubles erupting in his mine. Someone is sabotaging work in the mine and Byomkesh has been given the task to investigate, but it turns out that is not the only mystery that Byomkesh will have to decipher. An old gambler has been murdered and Manish Babu's seemngly harmless son has got involved in the murder case.
An Agatha Christie type mystery with a lot of suspects and the murderer is the one who you least suspect. some characters like Mohini leave you wanting for more, the pacing of the story is perfect. couple of flaws that I wanted to point out was a) there is a big clue thrown right before the end of the story which gives away the identity of the culprit b) the mystery of the coalmine is disappointing and even amateurish. Not sure why it was even included in the story only the murder piece should have been there...
The Mystery of the Fortress - By far the longest and best story in the book. Brilliantly crafted, a sublime mystery with very interesting and dark characters. It has got everything, a lonely fortress, treasure hunt, murder, a dysfunctional family and perfect setting for a Byomkesh mystery. There is Indian written all over the story which provides that extra attractiveness which only an Indian reader can relate towards. Must read!