Ian McLoughlin, who today admitted to the murder of pensioner Graham Buck, had killed twice before.
In 1984, he hit Len Delgatty, 49, over the head with a hammer several times after a row, and left his body in a cupboard. He was jailed for 10 years for manslaughter at the Old Bailey, reduced to eight years on appeal.
After his release, he went to live in Brighton, where barman Peter Halls, 55, offered him work. McLoughlin said he assumed Mr Halls was gay, and thought that he may be expected to sleep with him.
McLoughlin stabbed Mr Halls several times, and in 1992 was jailed for 25 years for murder, serving a total of 21 years behind bars.
More top news
Protestors angry about an immigration raid at Byron burger earlier this week reacted by launching hundreds of insects into the restaurant
Families and rebel fighters are believed to be among the people to have left besieged Aleppo on Saturday through safe corridors.
The balloon came down near Lockhart, Texas, around 8.30am local time.