A television show is essentially a bed time story. Your mum (or now the box) read you last nights chapter last week and you have spent all that time wondering what will happen in the next instalment. Some issues were resolved last chapter, but new conflicts and situations have arisen that need to be faced and of course there was the whole cliff hanger situation, where a man, women or even better a small child is dying, will die, needs an operation, just broke up with their partner. ect
Most fictional television series have a reasonable premise that some writer has thought up. Plane Crash on an Island, Police department with good-looking detectives, hospital with doctors with chiselled jawlines and models pretending to be nurses, biker gang, escaping a prison ect ect. However to make these premises properly succesfull takes week after week of tidy episodes.
In 45 minutes a writer has to:
-create a mini story within a much larger one (being the season, which is still within the entire series)
-resolve last weeks cliff hanger (but it shouldn’t be resolved too much so a contingency for future episodes, in other words little charlie doesn’t die in the car crash, but catches cancer, which could give him only a month, or something similar)
-keep the relationship between the characters freash and edgy, while retaining the old themes that the audience has already grown to love. As in throw a cat amongst the pigeons, but let it settle they throw in the next one.
-create a new cliff hanger, which can be resolved in next weeks episode.
-keep reminding people that something massive is going to happen at the end of the series, without giving too much away.
-throw a few jokes as a breather between the action or sexual tension or whatever maybe going on.
Thats is a list I’m sure a seasoned writer could add to, but because the big bucks that are in television the tightness of the half an hour serial that has evolved as a kind of recipe for success. People want to watch television for something different, but they also want to know what their getting and what they want to come away with, which can be a fine line.