Thoongaa Vanam is a Tamil action drama based on Sleepless Night by Frederic Jardin. Starring Kamal Hassan, Prakash Raj and Trisha Krishnan, the film is directed by Rajesh M. Selva. Diwakar, an officer in the Narcotics Control Bureau, busts a narcotics scam of drug kingpin Vittal Rao. In retaliation, Rao kidnaps Diwakar’s son and agrees to release him only if Diwakar returns the cocaine he has seized. Will Diwakar agree to his demands? Watch Thoongaa Vanam, the full movie online, only on Hotstar.