The show's director Philip Barantini discussed the conclusion of the four-part series

The Stephen Graham crime-drama landed on the streaming service last week

Adolescence, starring Stephen Graham and Ashley Walters, landed on the streaming service last week

Brittany Holberg was sentenced to death in the state of Texas in 1998

Lori Vallow Daybell was sentenced to life in prison without the possibility of parole

A reporter who witnessed Brad Sigmon's execution noted it would be forever 'etched' in his mind

Andrea Michelle Reyes was abducted from her New Haven home in 1999

Cult leader Charles Manson ordered four of his disciples to brutally murder the actress and her friends in August 1969

The actress was brutally slain alongside hairdresser Jay Sebring, actor Wojciech Frykowski and coffee heiress Abigail Folger in 1969

Abdul Aziz Khan first went missing in 2017 when he was taken from his home at seven years old

The 'Manson Family' were convicted of the murder of seven people - including film actress Sharon Tate - in 1971

Bryan Kohberger is on trial for the brutal murders of Kaylee Goncalves, Madison Mogen, Ethan Chapin and Xana Kernodle on November 13, 2022

Ricky Johnson Jr, David Harrington and Clayton McGeeney died last year

Gypsy Rose was sentenced to 10 years in prison in 2016 after pleading guilty to her role in the killing of Dee Dee Blanchard

Casey Anthony was acquitted after being accused of killing her two-year-old daughter

Disgraced family vlogger Ruby Franke could be in prison for up to 30 years

Ruby Franke's 12-year-old son, referred to as 'RF' in court documents, asked a neighbour for help

The disgraced YouTuber was jailed in August 2023 for abusing her six children

The former YouTube vlogger and mum-of-six was convicted of extreme child abuse in 2023

In September 2021, 23-year-old Brian Laundrie was officially blamed for murdering fiancé Gabby Petito and abandoning her body

The former YouTube star was jailed in 2023 for extreme child abuse

Shari Franke - the eldest daughter of the convicted child abuser and former YouTuber - has spoken out in a brand new Hulu documentary

The true-crime docu-series, American Murder: Gabby Petito, was released on Netflix last week (17 February)

Christopher and Roberta Laundrie opened up on what they knew about the death of the 22-year-old vlogger