S4·E8 The Grave He Dug

Rinku kills DJ, avenging Muskaan and uncovering the truth-Mahi murdered Kanwal, orchestrated Muskaan's death, and helped build the Royal Circle. Rinku and Papaji finally reunite as father and son. During a Royal Circle bust, Natasha gives Ghosh a hard drive exposing powerful clients. Mahi retaliates by kidnapping Samaira, forcing a final showdown. Rinku, Papaji, and Ghosh defeat Mahi and rescue Samaira-but an unknown man arrives, demanding the drive and warning that this war is far from over.