The idea was pitched to Sam J Jones via Skype in October 2014, and in January 2015 filming commenced. The first footage shot was at Laredo's STCE Comic Con in Texas, USA.
Some of the interviews took over two years to lock in.
Despite the subject matter being about a US actor, the UK production team only spent about a month in the USA.
The interview of Melody Anderson was filmed in her house in Los Angeles.
The interview of Richard O'Brien was filmed in Soho House, London.