Who is the narrator you hear in the first episode?

There is no series 9 of Foyle's War it ends in Series 8 which is a 3 episodes series only, and the attempt to kill Hilda was unsuccessful, she is still alive.

The scene you want is at the end of episode six ("Pykon"). It's there.

Those are just episodes which are heavily story-line centered. These are one's that you have to watch to understand the show. E.g. the Pilot or In Which We Meet Mr Jones ect.. Some Episodes are more pointed around the single story in that episode.

During its original broadcast, the episode "Jerry's Painting" ran for an extended 40 minutes rather than the usual 30 minutes because it followed "Goodbye, Michael", an extended episode of The Office that featured the final appearance of Steve Carell as a regular cast member

The structuring of a Television episode is different than a movie. The pacing is different as well. The only way to hold more information in 6 hour long episodes than 4 hours worth of a movie would be for every episode to end abruptly and begin right where the last one left off. Which just doesn't work well for TV. Every episode has to have an arc. A beginning, a climax and an end. While it's not uncommon to have a cliffhanger ending it is still done to a certain structure.

In the final episode when Joey buy Monica and Chandler and new baby chick and duck, it is revealed that Joey was told they were sent to a farm when they got old, obviously protecting Joey from the fact that they either died or were put down. The last time you hear from the Duck is in an early season 7 episode where Joey says the Duck was throwing up all over the place and he did NOT eat Rachel's face cream.

The Twilight Zone was about to be canceled after the third season, because Rod Serling took up teaching. However, at the half of the next season (1962-1963) another CBS show was canceled and TZ was put in it's place as a replacement. Because this show was an hour long, new TZ episodes had to be produced in this format. The resulting hour-long episodes are generally considered weaker, save for a few exceptions. This was due mostly to episodes becoming overly padded in their hour-long running time. The experiment was considered a failure, and the next (and final) season, the show returned to its original format.

Unlike American television, where even premium-cable series typically have at least 10 episodes, British television has many recurring series that have only a handful of episodes. Highly regarded shows such as "Foyle's War" and "Luther," for example, have only two to four episodes a year. More than that, the people behind "Sherlock" treat their work as something different from simply making extra-long television programs. In an August, 2011 press release from BBC One, "Sherlock" co-creator Steven Moffat responded to suggestions that there should be more than three episodes in each season/series by saying, "We think of them as films because they are ninety minutes long and once we knew we weren't doing hour long episodes they needed to be on that sort of scale. They have to have the size and weight of a movie."

Episode 1. It introduces all the important themes and concepts of the series, and invokes most of the visual vocabulary used for storytelling that would appear in the rest of the 13 episodes.

The pilot is about 10 minutes longer than all other episodes, at least in the original version. However, it was shortened for the international broadcasts to have the same length as the other episodes, as was the case with The Walking Dead, for example. These cuts concerned the plot of the episode. Additionally, there is also a lot of alternative or completely new footage.