For the latest episode, we go back to 1979 and Replicas - a song about terrifying androids with human skin who terrorise humans for fun: 'Down in the Park'.

The episode looks at the song's influences, lyrics, history, cover versions, remixes and more.

From Machmen to electronic car machines to beautiful piano versions, it's time to look back at one of Gary Numan's best ever songs.

Clips used:

• Tubeway Army - Down in the Park
• Gary Numan - (R)Evolution (audiobook)
• Steeleye Span - Long Lankin
• Tubeway Army - Do You Need the Service?
• Gary Numan - Down in the Park (live, 1980)
• Gary Numan - Down in the Park (piano version)
• Gary Numan - Down in the Park (Curve remix)
• Gary Numan - Down in the Park (Sulpher remix)
• Marilyn Manson - Down in the Park
• Foo Fighters - Down in the Park
• Electric Six - I Invented the Night
• Gary Numan - Down in the Park (live at Brixton Academy)