action adventure amsterdam artmuseumcurators artrestorers artthefts assassination assassins coldwar crimesagainst espionage fic000000 fiction france gabriel gabriel(fictitiouscharacter) gabrielallon(fictitiouscharacter) general intelligenceofficers intelligenceservice investigation israelis kidnapping militaryweapons missingpersons moles(spies) murder netherlands newyorktimesbestseller nyt:combined-print-and-e-book-fiction=2017-07-30 nyt:combined-print-and-e-book-fiction=2019-08-04 nyt:hardcover-fiction=2018-08-05 paris(france) prevention sabotage secretservice spies spystories suspense switzerland terrorism terrorists thrillers undercoveroperations vaticancity