Right-wing François Fillon's presidential campaign has been thrown into turmoil after claims that his wife Penelope was paid €500,000 as his parliamentary assistant despite doubts she ever performed that role. It is also claimed that Penelope Fillon received €100,000 from a magazine owned by a billionaire ally of former prime minister Fillon, even though she appears to have done little work for it. The couple have been questioned by investigators, while new claims emerge that the family may have pocketed close to a million euros in all. Now Mediapart can reveal that a key advisor on Fillon's election campaign was given a job at a charitable foundation run by the same billionaire, Marc Ladreit de Lacharrière, at the time she began working for the presidential candidate. Yet there is no public trace of the advisor's work at the foundation. Antton Rouget investigates a case that will raise yet more questions surrounding the finances of the frontrunner to be the next French president.