The makers of Valathu Vashathe Kallan, starring Joju George and Biju Menon, have unveiled the film's trailer, offering a taut glimpse into a crime drama driven by authority, intuition and moral conflict. Directed by Jeethu Joseph and scripted by Dinu Thomas Eelan of Koodasha fame, the film is scheduled to hit theatres on January 30.The trailer immediately establishes its ideological core before moving into darker territory.