sentences:  The story was later adapted by Big Finish in 2003 as a webcast production featuring Paul McGann's Eighth Doctor (and later released as an audio story that same year), while Adams himself reused elements from the serial for his first Dirk Gently novel "Dirk Gently's Holistic Detective Agency".The story was novelised by Gareth Roberts in 2012, and completed with animation in 2017, with most of the original cast returning to play their original roles.Written by Alistair Beaton & Sarah Dunant, this four-part story was commissioned on 12 December 1978.