约翰·西姆

John Simm

饰：Self - Narrator,

Mark David Chapman

饰：Himself

Paul Gambaccini

饰：Himself - Radio and Television Presenter

David Printz

饰：Himself - Psychiatric

Paul Giles

饰：Himself - Doctor, University of Oxford

B.P. Fallon

饰：Himself - Plastic Ono Band

Carl Healion

饰：Actor in Dramatic Reconstructions

James Leavy

饰：Actor in Dramatic Reconstructions

Amandine Lesergent

饰：Yoko Ono in Dramatic Reconstructions

Stephan Lynn

Stephan Lynn

饰：Himself - Medical Doctor

Craig Unger

Craig Unger

饰：Himself - Non-Fiction Author

约翰·列侬

John Lennon

饰：Self,(archive footage)

Liam McGonagle

饰：Actor in Dramatic Reconstructions