Question about Ep:316- Case of ACP in a Death Game

In this episode, CID inspector Daksh was inquiring about a hand tatoo of a bird that had some sort of connection to his brother's murder. However, everytime he brought up the issue of the tatoo with other CID officers or even ACP, they would all ignore him and sadly the episode ended without any discovery behind the whole secret. Is their an episode proceeding this one that has opened up to this issue? Or was this scrapped forever by the show afterwords? I hope the former is true, because it was an interesting tale. Anybody know? Thanks.