Not a lurid headline but a crossword clue, and the "calculating Swiss" is EULER, one of my heroes, pictured below in iconic headgear.
Leonhard Euler (1707-1783)
I was gratified to see that Euler has made it across into the realms of General Knowledge. There aren't many mathematicians famous enough for their name to be the answer to a Times Quick Cryptic Crossword clue.
The picture above, a pastel by Handmann painted in 1753, hangs in the Kunstmuseum Basel. This is probably the best known portrait of Euler.
Crossword Clue: "English" = E + "monarch" = RULER which "beheaded" becomes ULER, giving EULER (pro. "Oyler").