The Big CasesThe Abuser Working for MI5BBC News Duration: 15 minutesFirst broadcast: Sat 21st May 2022, 22:45 on BBC News ChannelLatest broadcast: Sun 22nd May 2022, 23:45 on BBC News ChannelAvailable for yearsWatch nowThis is the story of a dangerous MI5 agent, which the government tried to keep secret.GenresFactualCrime & JusticeFormatsBulletinsBrandThe Big Cases Source: BBC Online