- Benedict Cumberbatch Thomas Edison
- Michael Shannon George Westinghouse
- Tom Holland Samuel Insull
- Matthew MacFadyen J.P. Morgan
- Katherine Waterston Marguerite Westinghouse
- Nicholas Hoult Nikola Tesla
- Tuppence Middleton Mary Edison
- Louis Ashbourne Serkis Older Dash
- Simon Kunz Womack
- Celyn Jones Sherman Quincy
- Tom Bell Reverendo Vincent
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