Continuity mistake: When Lin lifts the rocks around the house in the final scene, there are eleven of them. But in the last shot, there are only eight rocks.
Factual error: On the missing poster in the hospital, one of the gendarmes is said to hold the rank of Brigadier. This is a Police Nationale rank equivalent to sergeant; it is not used by the Gendarmerie Nationale, since all ordinary gendarmes are equivalent in rank to sergeant. The lowest supervisory rank in the Gendarmerie is Maréchal de Logis-Chef (staff sergeant).
Turtles All the Way Down - S1-E13
Other mistake: When Dr. Lee and Dr. Evans are arguing just after Red Reality Michael and Green Reality Michael converse, Michael turns around and says, "Shut up!" but the closed captioning says, "Enough!"