Same path was followed with the show 'Lucifer'- a procedural police show with some extras thrown in, when it got established they took the series into the direction they wanted all along.
There are plenty of other examples.
Dollhouse started out looking like a "client-of-the-week" show about Echo using her programmed personalities to help out various people in need, but evolved into a hardcore science fiction epic about how the technology to copy and overwrite minds led to the collapse of civilization. Even
Orphan Black started out looking like it was going to be a police procedural with Sarah pretending to be a cop and trying to keep her partner from finding out, but that status quo lasted barely four weeks. I figured out some years back that the first few episodes of a show are mostly about appeasing cautious execs, making the show look like it fits a safe, conventional formula so as to get it on the air, and it's only when you get past the first 5-6 episodes or so that a show really begins to establish its true identity.
Sometimes this can backfire, though, since the same conventionality that appeals to executives can alienate genre fans.
Threshold lost viewers rapidly because the first few episodes seemed repetitive and formulaic, and was even pulled from the air with 4-5 episodes not yet shown -- but when they were finally aired on Syfy, literally the very first episode after cancellation began the show's aggressive move away from repetitive formula and toward what would've been a constantly changing status quo as the alien invaders got more and more successful (to the point that they were actually considering renaming the show each season --
Foothold for season 2 and
Stronghold for S3). And Syfy's own 2007
Flash Gordon started out shying away from its alien-world premise and trying to emulate
Smallville with a largely Earthbound approach, so by the time they moved away from that 7-8 episodes in and started embracing the Mongo side of the story more, eventually abandoning Earth altogether, they'd already lost most of their audience, and even though the last 2/3 of the season was vastly better than the first 1/3, most people never saw its improvement and it was cancelled. Both shows might've succeeded if they'd started out being the shows they ended up being, instead of trying to camouflage themselves as something safer and duller.