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A huge thanks to Patrick Maletinsky at the University of Basel and Jan Jeske at the Fraunhofer Institute for their insights into NV magnetometry.

Likewise, thank you to Brad Roth at Oakland University, John Wikswo at Vanderbilt University, and Bob Fagaly at the IEEE for their input on the history and constraints of magnetometry.

Thank you to Douglas London, CIA Senior Operations Officer (Rtd), for his input on the story. His book, The Recruiter, can be found here - https://ve42.co/Recruiter

A big thanks to Herbert Lin at Stanford University and Emma Briant at the University of Notre Dame for their knowledge on deception and propaganda tactics.

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References:

Exclusive | 'Ghost Murmur' via the New York Post

Exclusive | Trump confirms CIA 'Ghost Murmur' tool via the New York Post

Béchard, D. E. (2026). Scientists question CIA’s claim of long-range heartbeat detection. Scientific American.

Roth, B. J. (2023). Biomagnetism: The First Sixty Years. Sensors

Doherty, M. W. et al. (2013). The nitrogen-vacancy colour centre in diamond. Physics Reports.

"Quantum Diamond Sensing: The Surprising Power of NV Centers | Ron Walsworth" by 632nm Podcast on YouTube

"Ronald Walsworth - “Quantum Diamond Sensors" by Stanford Physics on YouTube

Arai, K. et al. (2022). Millimetre-scale magnetocardiography of living rats with thoracotomy. Communications Physics.

Additional sources available here: Ghost Murmur Video - https://ve42.co/ReferencesGhost

Images & Video:

https://www.youtube.com/watch?v=WmXuaHX3QeY

https://www.youtube.com/watch?v=DkmHh6eZoZs

https://www.youtube.com/watch?v=vrRJimixWEc

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Writer: Gregor Čavlović

Producer and Director: Gregor Čavlović

Presenter: Gregor Čavlović

Editors: Jack Saxon and James Stuart

Additional Editor: James Horsley

Animators: Emma Wright, Fabio Albertelli, and Domonkos Józsa

Researchers: Aakash Singh Bagga

Production Team: Jess Bishop-Laggett, Glen Griffiths, Matthew Cavanagh & Anna Milkovic

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