The Cage Opens (S04E01)

Five years on from Season 3, Rinku has rebuilt his Chandigarh empire alongside his biological father, Mahinder Atwal, now expanding worldwide through a dangerous deal with the Dhillon brothers, led by hip-hop sensation Bobby Dhillon. While Papaji waits in prison for a pivotal court verdict, Ghosh teams up with Rashi to investigate a disturbing series of missing girls. When Papaji is acquitted and released, Rinku swears to bring him down. A violent clash between father figures becomes unavoidable.