But since he withdrew his confessions, three of the verdicts have been overturned. In the remaining five cases, Quick has been granted two retrials and applied for another three.
The most outspoken critic of the legal process against Quick was Hannes Råstam, an investigative journalist who passed away earlier this year.
He believed that, faced with lacking forensic evidence and no other suspects, the police and prosecutors guided Quick, who was often drugged, through the interrogations to arrive at the desired outcome: a guilty verdict.
His book, "The Case of Thomas Quick", thoroughly examines all documentation available in the case to find that one of Sweden's most notorious criminals was fabricated.
But the former Chancellor of Justice Göran Lambertz is of another opinion.
Lambertz, now a Supreme Court justice, told Swedish Radio on Monday that "Råstam is a highly skilled journalist, but his skill has blinded people and led them to draw the wrong conclusions."