Viewers around the world were shocked by the Milltown cemetery deaths, which happened at the funeral of three IRA members shot dead by the SAS in Gibraltar.
The film has been made by acclaimed film-maker Vanessa Engle, who has previously won critical praise for her candid questioning in revelatory television documentaries such as Inside Harley Street.
Engle’s hour-long film includes perspectives from republicans and loyalists, including Adams, as well as the security forces and family members of those who were killed.