Shadow Play - S4-E19
Other mistake: When Ezra takes Spencer's file from the school he takes it from section A-E. Neither of Spencer's names fit into that category.
Pretty Little Liars (2010)
1 mistake in Shadow Play
Starring: Lucy Hale, Ashley Benson, Sasha Pieterse, Shay Mitchell
Trivia: Lesley Fera, who plays the mother of Torrey DeVitto and Troian Bellisario in this series, is, in reality, only 12 years older than DeVitto and 13 years older than Bellisario.