Of course this is NBC and even if they create a potential hit in ratings , they always find a way to destroy it, by moving the show to a new night and/or going on hiatus for so long no body remembers what the hell it was about anymore. Look at Heroes & Revolution. They beat both shows to death with those kind of changes.
I have to agree, they already did it with the Blacklist when it was out for several weeks due to December holiday and winter olympics.
Especially with this kind of show that makes it difficult to keep track of the clues.