While editing the "Eye Vacuum Trap" scene, editor Steve Forner received a visit from the Los Angeles Police Department after his neighbors reported screaming coming from his office.
In Saw VI (2009), there was a scene in which John was denied insurance coverage for an experimental cancer treatment located in Norway. In this film, he seeks the treatment out.
The first film in the series to not feature police investigating a murder.
In the film, John uses the e-mail address "kramerjohn994@gmail.com" to send an e-mail to Cecilia. This e-mail address works; viewers can send e-mails to this address. They will receive a reply stating that John is away but will reply when he becomes available again.