During an interview in June 2015, Farmiga (Norma) revealed that she was injured while filming the final scene of the season with Nicola Peltz Beckham (Bradley) and Freddie Highmore (Norman), resulting in her having to go to the emergency room.
This episode was originally titled "The Psycho".
Norma (Vera Farmiga) and Norman's (Freddie Highmore) conversation after she returns home from visiting Pineview is a reference to the conversation between him and Marion Crane (Janet Leigh) in Psycho (1998) when he asks her if she has ever seen the inside of one of those places.
The car that Norman sinks after killing Bradley has the same license plate number as Marion Crane's (Janet Leigh) car in the original Psycho movie. NFB 418. Norman's initials and if you add "418" equals 13.
This episode was watched by 1.67 million viewers.