The mystery of the briefcase

Usually he doesn't get a vacation like everybody else, so inspector SOM LAHIRI went to visit RAVANGLA during the heavy monsoon season. His daughter, ANKHI a college student is quite upset, there was nowhere to visit and nothing to see. It was raining everywhere, even the statue of BUDDHA was out of sight. Here they met ORKO, a bit of a crazy guy around the age of 28-30. ORKO told them that after being driven crazy by his work pressure back in KOLKATA, he had come to visit the mountains. RANI, SOM's wife teased him, "See, there is someone like you here too."ORKO then all of a sudden summons SOM to his room, he had forgotten the combination lock to his suitcase, if SOM could help him out in anyway. SOM smiled and told RANI; "See, he has forgotten his combination lock too" and went to ORKO's room, where he saw ORKO was sitting with a revolver pointed towards SOM. He took out his identity card and revealed that actually, he is an I. B. officer. What happens after that?