Lea recalled that sequences were filmed of a girl running through a forest.

The aerial sequences with the Bell 47 helicopters were filmed there.

The sequence was filmed with a motion-control camera to give a better depth of field.

Sometimes the same sequence would be filmed using several cameras.

At other times, sequences are filmed in a documentary style with Byrne's character as host.

Several sequences were filmed in scenic locations throughout the country.

When explaining how the sequence had been filmed, Morris said the child was not present but added digitally.

However, due to time constraints this sequence was not filmed.

The two sequences were filmed on different black-and-white film stock so that they would look like true period films.

For the series, the sequences were filmed in a real club.