Continuity mistake: The chain and collar vanishes from Mailer's neck as he runs into the mansion. (01:33:45 - 01:35:20)
28 Days Later (2002)
Plot summary
Directed by: Danny Boyle
Starring: Brendan Gleeson, Cillian Murphy, Christopher Eccleston, David Schneider, Alex Palmer, Bindu De Stoppani, Jukka Hiltunen
A virus that locks those infected into a permanent state of killing rage, is accidentally released from a British research facility. Carried by animals and humans, the virus is impossible to contain, and supposedly spreads across the entire planet. Twenty-eight days later, a small group of survivors are trapped in London, caught in a desperate struggle to protect themselves from the infected.
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Suggested correction: It doesn't disappear; it is just hard to see. The chain is attached to the actor's back, quite securely, likely for the actor's safety. It is there, though, and can be seen in some shots.
Hannah: Are you trying to kill me?
Selena: No, sweetheart. I'm making you not care. Okay?
More trivia for 28 Days Later
Question: At the end we are left with the question of the pilot's intentions, and what happened. Is he going to help them, or pull an about-face and machine-gun them down thinking they're infected?
Answer: That question is actually answered. The pilot is speaking Finnish, and he says into the radio "lähetätkö helikopterin" which translates as "Can you please send a helicopter?" Looks like he was actually helping them after all, and there is still some civilization (or at least people with radios and helicopters).