Anecdotes

The 1990s section of the film, focusing on a musician called Margot moving into the infamous house on Cielo Drive to write a new album, is very loosely inspired by the period when Trent Reznor of the Nine Inch Nails recorded several albums and lived at 10050 Cielo Drive in the early nineties.

This film does not adhere to the "Helter Skelter" motive for the murders put forth by prosecutor Vincent Bugliosi during the highly publicized trials of members of "The Manson Family". Drug dealing is the common theme running through the 1960s section of the film.

Ciaron Davies was cast as Charles Manson after submitting an audition tape in which he improvised for 10 minutes in character. The majority of his lines in the final film were improvised.

Linda Kasabian, who was present on the night of the real life murders at Cielo Drive, was originally included as a significant character in the script. An actress was cast to play the role of Kasabian but she left the production on her first day of filming after the caterer revealed there would be no chicken and chips served for lunch that day. Despite the caterer and producers agreeing to add chicken and chips to the menu the actress still opted to leave the set before filming any scenes as Kasabian. Unable to re-cast at such a late stage the producers decided to eliminate the character from the film and instead focus on the other "Manson Girls".

Interiors were shot on location in Carmarthenshire and Swansea, UK. Exterior footage was filmed in Chatsworth, Los Angeles, USA, including aerial shots of the terrain surrounding Spahn Ranch, where "The Manson Family" lived in the late 1960s.