Warning Phone Call

Riya, Sam, Sunny, and JD speaks to Bharti Singh after getting attacked. JD tells that he still has a doubt on Harsh and thinks that he attacked Bharti Singh. Meanwhile, Boss receives a phone call from the attacker to warn him to stop Sam, Riya, JD, and Sunny's research. Will Sam, Riya, Sunny, and JD be able to catch the attacker?