The Case Of The Missing Body (Old): Part 2

An investigation of Jayesh's home reveals a threatening letter that was recently sent to him as well as an audio cassette also leaving a death threat. Taking advantage of this, CID carry out a forensic study of the handwriting and the voice of the person who left the threats, which reveals that they likely have quivery hands and drink a lot. But the case takes on a twist when CID catch a thief who confesses that he stole a suitcase that had a revolver in it, and an inspection of it reveals a picture of Jayesh- the suitcase belongs to the killer. Will these clues be enough to solve the case?