Who’s to Blame?’ Available to Stream on YouTube

Our deep dive into Liam Payne’s tragic death is officially up on YouTube — and now’s your chance to catch all the jaw-dropping details if you haven’t seen it yet.

‘TMZ Investigates: Liam Payne: Who’s to Blame?’ takes you to Argentina, where TMZ hit the ground to uncover shocking new information behind the former One Direction star’s fatal fall from a hotel balcony in Buenos Aires.

The doc features exclusive interviews with three suspects prosecutors want charged in connection with Liam’s death, along with a chilling, never-before-heard firsthand account from an eyewitness who was there for Liam’s final hours.

And yes — we combed through official police documents too … and what they reveal is anything but cut and dry.