Netflix's new true crime doco Strong Island has five-star reviews

A new true crime documentary coming to Netflix has received overwhelming praise - and already has a 100 per cent rating on Rotten Tomatoes.

Strong Island is the latest true crime doco to be delivered by the streaming service, following on from the success of Making a Murderer and The Keepers.

Made by Yance Ford over 10 years, it follows the aftermath of the death of his brother William Ford, a 24-year-old teacher who died at the hands of Mark Reilly, a white 19 year-old mechanic, in Long Island in 1992.

Although Ford was unarmed, the director says he became the prime suspect in his own murder. The documentary follows the effects his murder had on the rest of his family.

Strong Island doesn't hit the streaming service until September 15, but critics are already raving after its debut at Sundance.

"Solemn, searching and at times even poetic in its indignation, this is a sensitively crafted contemplation of corrosive grief, even if the unanswerable questions surrounding the case keep the film somewhat emotionally muted," wrote The Hollywood Reporter.

Sight & Sound called the film "transfixing... Strong Island is as much an exploration of the filmmaker's identity and feelings surrounding his brother's murder as it is a loving, even-handed portrait of William."

Variety also heaped praise on it. "Ford's intent as a filmmaker isn't just to expose and protest the injustice of his brother's murder. It's to say: Behold what was lost. A life. A human being. A complex soul. A family's equilibrium. Feel what was lost."

You can stream it on Netflix from September 15.