Very underrated!
Stalker was fantastic, but where they went wrong is bringing in new cast main members too soon. In a first season of a TV Series they need to keep the main cast as it is and not introduce new people until the second season. With "Stalker" viewers were just getting to know the main characters, then the shows goes and brings in other people near the end, it all became a bit rushed. How are viewers supposed to connect with the main characters when they bring in brand new characters with their own rushed storyline? Why do the makers of this show think the viewers would even care what happens to the new characters when they've just been introduced.
"Stalker" had tons of hype on Twitter when it first came out. i think the fans, the cast and the writers thought the show would last for years, but obviously the majority of viewers didn't like the show, i personally thought it was a clever TV Thriller series and it had the psychological element as well.
This is the risk that is made with TV Shows, they make a TV Series and then it's all up to the viewers. if the show doesn't get enough ratings, it's gone.