Doctor Who: 12 Cool Details Revealed In Steven Moffat's Blink Commentary

12. The Opening Night-Time Scene Was Actually Shot In Broad Daylight

It goes without saying that it's not always possible to shoot something exactly as it appears on the page - especially in a fantasy show like Doctor Who - and some post-production trickery may be required to pull certain things off.

A small example of this can be found right at the start of Blink. The opening scene where Sally Sparrow approaches and investigates the creepy Wester Drumlins house - which Moffat scripted as a night-time scene - was actually shot during the day.

This was noted by Murray Gold during the commentary, who stated that the scene was "a lot brighter" in the first version of the episode he received.

As a result, special effects were required to make the whole sequence look like it was set at night. If you're ever watching this scene and you feel like the lighting is slightly off, maybe a little too bright in places... this is probably why.