Continuity mistake: When Molly is in space, alone, a man she knew is on The Other Side of a door that has a circular window in it. The man uses his finger to draw the words "HELP ME." When we first see the words, they are legible and about a third of the way below the top of the window, but the next time the words are much higher up and hard to read, and the third time they are now back to the original place.
Extant (2014)
Episode list - season 1
Starring: Halle Berry, Goran Visnjic, Camryn Manheim, Pierce Gagnon
More mistakes in Extant
Trivia: The 'dialysis machine' which Molly obtains from the GSC to use on her son is actually an Apple AirPort Extreme Wireless Router turned upside-down. (00:32:00)