they do it to hold the curiosity..
in season 2 house...you'll be astounded of the season finale..as a dude comes and shoT house in point blank.
at season 3, it ends by house firing his whole team..sort of like in the middle.
then in season 4 house inadvertently kills his best friends girl friend..
in house season 5 finale...house having a psychotic break and leaves us

if u were to have watch x files, if you feel like this...you might wanna kill chris dude for keepin u long..
its a technique they use in TV series...
from smallville to x files to Game of thrones....
its understandable..
i havent watched Game of thrones...
i'll comment once i finished the entire season...
check the number of viewers in each episode of both shows
GoT
Covert Affairs