A three-part documentary series about former Patriots tight end and convicted murderer Aaron Hernandez is headed to Netflix.

On Friday, Netflix released a haunting trailer that features one of Hernandez's phone calls from prison.

“My whole body’s shaking right now,” Hernandez tells a woman on the other end of the call.

“What happened?” the woman asks.

“You know my temper,” Hernandez answers.

Watch the trailer below:

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Hernandez was arrested and charged with the murder of Odin Lloyd in 2013. He was convicted and sentenced to life in prison for Lloyd's murder in 2015, and was acquitted of killing Daniel de Abreu and Safiro Furtado in 2017 before committing suicide just days later in his jail cell.

"Killer Inside" is set to be released on Netflix on Jan. 15.