Mr Johnston and Mr Rowlings were subjected to horrific crimes before their deaths at the hands of Ian MacLeod and Dean McLeod in November 2022 in Greendykes Road, Edinburgh.
The pair admitted murdering their victims when they appeared at the High Court in Edinburgh on Monday, 8 April 2024.
They murdered and mutilated the two men with a blowtorch and forced nails into the eyes of one of their victims and have been jailed for at least 34 years.