An inquest into the death of a 29-year-old man who suffered from mental health problems will begin on 23 January 2017 at Buckinghamshire Coroner's Court, Beaconsfield. The inquest is expected to last 10 days.
Jack Portland died on 27 December 2015 following a struggle with mental health issues and drug use.
In April 2015 Jack was arrested for shoplifting and spent time in prison at HMP Woodhill.
Shortly after his release Jack returned to prison at HMP Lewes and then spent time at two mental health facilities, The Dene in West Sussex and The Whiteleaf Centre in Aylesbury.
Throughout this time his parents continued to visit him regularly and raised their concerns over his mental health to staff at the prison, the police, then Secretary of State Michael Gove and staff at the mental health facilities.
Following a period of unescorted leave from The Whiteleaf Centre on 27 December 2015 Jack failed to return from the centre and was found dead.
Solicitor Merry Varney from law firm Leigh Day is representing the family at the inquest. She said: "We hope that the inquest will help answer the questions that Jack's family have about his treatment at the various institutions before his death. The family and their lawyers will not be making any further comment until after the conclusion of the inquest"