In his next outing, Ayushmann Khurrana’s Article 15 will take on India’s deep-seated caste system. The film – set to release on 28 June – is based on the alleged 2014 gang-rape and murder case involving two teenaged girls in Uttar Pradesh’s Badaun district.

While the trailer showcases the horrific nature of the 2014 crime, the real story is much more complicated. At every step of the investigation by the authorities in charge – the Special Investigation Team (SIT) and the Central Bureau of Investigation (CBI) – the case only turned murkier.

So, what exactly happened? Five years on, with the accused out on bail and no justice delivered, here’s what transpired.