The Lost Sons (2021)

The Lost Sons is a 2021 American-British documentary film, directed by Ursula Macfarlane and premiered at South by Southwest on March 16. It follows Paul Fronczak, a man who discovers he had been abandoned as a child and mistakenly returned to another family whose young son was missing, then learns the identity his biological mother gave him and the whereabouts of the "real" Paul Fronczak.