So I have a feeling that Rohit might have an inkling that Mahesh is the stalker. The way he explained the entire plan to YK and asked Mahesh to go with Sona today, Rohit seems smarter than this. Mahesh is a completely new person, someone Rohit doesn't know or trust. Why will he entrust Sona's responsibility on him otherwise? Why will he explain his and commissioner's plan to someone completely new when even his own family members don't know about it yet? This seems like a bait to catch the stalker red handed.
Now what I don't understand is the last time Sunita told Sonakshi that Ravi is innocent, Sonakshi said she knows that and trusts Ravi, then how come suddenly she believed that Ravi is the original attacker and became so carefree. And Mahesh was shown rash driving in yesterday's episode. What happened to that?