'They didn't look old enough': who filled a French art gallery with fakes?

Last year, a museum dedicated to the work of Étienne Terrus revealed most of its paintings were probably not by him. How did they get there?
Read more: https://www.theguardian.com/global/2019/jun/15/french-art-museum-full-of-fakes-etienne-terrus?source=Snapzu