The short answer is
Also, the real police faced – the higher-ups didn't believe a single gang was behind seemingly unconnected murders for years. That’s faithfully shown. So, Is It a Documentary? No. Is It Truthful in Spirit? Yes. Delhi Crime Season 2 is closer to Mindhunter than a news report. The creators (including executive producer Richie Mehta, who researched for years) call it "emotional realism" —the names are changed, but the fear, the police exhaustion, and the grotesque randomness of the murders are painfully real. delhi crime season 2 is it true story
Here’s an interesting angle on the question: The short answer is Also, the real police
The long answer is more fascinating—and disturbing. Season 2 is based on a string of brutal murders committed by a gang led by a man named Ravinder Singh (called "Kachcha Baniyan" due to his trademark vest). In the show, he's fictionalized as Sunil Rana . Delhi Crime Season 2 is closer to Mindhunter