David Duchovny

Self - Host

Martin K.A. Morgan

Self - Historian & Author

Sami Jarroush

Self - Historian

Don Wildman

Self - Historian

Andy Bustamante

Self - Former Covert CIA Officer

Hakeem Oluseyi

Self - Physicist

Yohuru Williams

Self - Professor of History

Nehemiah Mabry

Self - Engineer & Former NASA Researcher

Paul Springer

Self - Military Historian

Brandy Schillace

Self - Science Writer

Brandy Schillace

Self - Medical Historian

Tracy Walder

Self - Former CIA Officer & FBI Special Agent