Revealing mistake: Patty Duke's stand-in is visible behind Cathy when the family is in the front hall welcoming their aunt.
Visible crew/equipment: After Graig returns Patty's math book, Cathy tries to use the pamphlet's rules as she follows Craig. When Craig thanks Cathy for helping him with Latin, the boom mic repeatedly pops up into view in the bottom right corner of the screen. (00:18:10)
