Ferris caused more controversy when it emerged he was being filmed for a fly-on-the-wall television show to be broadcast on Five. TV bosses were accused of glamourising his life of crime, with a Glasgow detective stating "Now we have Ferris the TV star – it makes you sick. He can try to become a Z-list celebrity all he wants, but he is a career criminal and no matter how many times he tries to reinvent himself, we will always know the truth". In April 2005 police in Edinburgh began investigating Ferris over concerns he was attempting to invest in the taxi trade in the city, and a month later details of a planned film about Ferris' life emerged, starring Scottish actor Robert Carlyle and Oasis singer Liam Gallagher. Ferris released his third book "Vendetta" in October 2005, and followed that with an appearance at the Festival of Scottish Writing in Edinburgh in May 2006. This was followed by the release of his fourth book "Villains" in October 2006. In January 2007 Scottish Minister for Justice Cathy Jamieson announced a planned initiative to prevent convicted criminals from profiting from the publication of their memoirs, although Reg McKay has previously stated Ferris did not profit from the sale of the first book and that his motive was not financial.