Revealing mistake: As Elsa sings "Let It Go" she pulls her hair into a long braid going down her back. She pulls it with her left hand from behind her to in front, but the end doesn't flip over her shoulder, she just pulls it straight through to the other side without going over the top. (00:34:10)
Continuity mistake: Just after Nick finishes the first part of his story where he says Gatsby was his neighbour, Nick stands in front of the right hand side window. It then cuts to inside the sanitarium and he is suddenly standing in the middle window. (00:05:20)