If you start learning a lot of information about a member of your team you barely knew, get your funeral attire ready.Briefly, an episode or issue that suddenly focuses on a character specifically because they're going to die at the end (or fairly close to the end). Usually this is a relatively minor recurring character, or someone who technically is in the main cast but never had a Backstory or much in the way of characterization. The episode/issue may be honest about what's going to happen, or try to make it appear that the character is finally going to be promoted to a main character. Episodes about the death of a major character who already got plenty of exposure and a fairly full Backstory don't quite fit this trope, since it's not as obviously different from the character's normal treatment. Sometimes obviously the result of the writer realizing that they need a dramatic death, can't sacrifice the main cast, and the chosen character just hasn't been given enough to do that the audience might care. In other cases, the understandable result of Real Life Writes the Plot when the actor has to leave the series and the writer wants to give them something to be remembered by. Related to Back for the Dead, and can happen in the same story if the character hasn't been on screen for a while but never actually said to have left. If the character was considered annoying, this is a leading cause of Alas, Poor Scrappy. If done very well it can be heartrending. The big clue to many of these is Belated Backstory suddenly popping up when normally the character gets two or three lines an episode. In Reality Television, it's marked by one contestant getting more "confessionals" (individual solo interviews) than they usually do, or by footage of them talking to other contestants about a) how much they want to win or how much the win will mean to them / their family / their future; b) how good they are at some particular aspect of the competition (in this case, it will almost certainly be that aspect that proves to be their undoing); c) that they've realized that one particular aspect is their weak spot and that they are going to be especially careful to do that thing correctly from here on out (in this case, they most likely will be eliminated for making exactly the mistake they said they were going to avoid); or d) how much they are controlling the game. A subtrope is Death By Flashback and Sympathetic Murder Backstory.
As a Death Trope, all Spoilers will be unmarked ahead. Beware.