“Secrets of History” traces the very tormented destiny of Philip V of Spain. Stéphane Bern devotes a program to this monarch, grandson of Louis XIV, who, between two attacks of dementia, brought his country into modernity.

See Wednesday at 9:10 p.m. ET/PT on France 5 and 8:30 p.M. ET /PT on CNN 5 and 6:30 a.m., ET/ PT on CNN TV.