The beach attack in Sousse will feature on the BBC investigative programme Panorama this evening, a week ahead of the inquest into the deaths of the 30 British victims who died in the atrocity.
Panorama returns to the scene of the killing, in June 2015, in which a total of 38 people died.
Reporter Jane Corbin investigates whether security concerns were ignored before the attack and if lives could have been saved on the day.
She asks why there wasn’t tighter security or a warning to holidaymakers to stay away from Tunisia after similar attacks.
The programme will also focus on whether the Tunisian government, the British tour operators and the Foreign Office bear any responsibility for what happened.
The inquest into the attack is due to begin on January 16 and is expected to take six to eight weeks.
Terror on the Beach: Why did it happen? is on tonight on BBC 1 at 8.30pm.
