One arranged Marriage Murder
Chetan Bhagat

Keshav Rajpurohit and Saurabh Maheshwari are best friends working at Cybersafe. They also have a detective agency "Z Detectives" which they started after the events of The Girl in Room 105. Saurabh is engaged to Prerna Malhotra and is set to get married in 3 months. Prerna fasts on Karva Chauth for Saurabh.

But as she waits for him to come to the terrace she falls to her death. Keshav and Saurabh take up the case to find the killer, but on the way they go through many troubles and confessions to find the murderer.