L'étrange monsieur Duvallier (TV series)

Mr Duvallier is an old, important french businessman who earned lot of money from industry... but in fact, he's Reiner, a ex-gangster presumed dead with a big loot and using a forged identity. Decided to redeem himself, he plays the adventurers across the world with Laurence, his secretary (and only person to know about his two faces) - IMDb