Tintin Album - The Calculus Affair (French Edition)

A sensational invention by Professor Tournesol starts by causing disasters at Moulinsart Castle: all the windowpanes shatter, along with most glass objects! Unfortunately, this discovery won’t be joining the jokes-and-pranks aisle. Spies try to seize Tournesol to extract his plans. It turns out the kidnappers are Bordurians, eternal enemies of the Syldavians, and they are determined to turn Tournesol’s invention into a weapon of mass destruction. Hardcover