Fox’s latest entrant in the televised musical genre, a non-live version of “The Rocky Horror Picture Show” starring Laverne Cox, drew a 1.7 in the demo and 4.95 million total viewers on Thursday night. On the plus side for Fox, that was a massive 89% improvement on the night from last week (“Pitch” and “Rosewood” typically air Thursdays).

It’s not surprising that a cult movie experience like “The Rocky Horror Picture Show” didn’t bring in more viewers. Unlike musicals like “Grease” and “The Wiz,” “Rocky Horror” has a far more niche (if far more passionate) fan base. Much of the joy in “Rocky Horror” is in the fabled midnight showings, with participants in costume acting out what’s on the screen behind them and raucous audience interaction.

Elsewhere on the airwaves:

ABC’s “Grey’s Anatomy” lent credence to the now-common saying, “Flat is the new up.” It held steady with a 2.1 demo rating — bigger than any other non-sports show on the night — and 8.06 million viewers. “Notorious” stayed below the Mulaney Line with a 0.9 in the demo and 3.98 million viewers. “How to Get Away With Murder” managed to tick up to a 1.2 demo and 4.3 million viewers.

NBC bled a few more tenths of a ratings point. Comedies “Superstore” and “The Good Place” dropped down to a 1.0 and a 0.9 in the demo, respectively. That’s a two-tenth drop for “Superstore” and three for “The Good Place.” “Superstore” had an average audience of 4.15 million and “Good Place” drew 3.77 million. “Chicago Med” slipped to a 1.2 in the demo and 6.61 million viewers. On the bright side, “The Blacklist” held steady with a 1.1 demo rating and 5.34 million viewers.

Over on The CW, “DC’s Legends of Tomorrow” drew a 0.6 demo rating, even with its premiere last week, and 1.78 million viewers. “Supernatural” dropped a couple tenths from its premiere, to a 0.6 in the demo and 1.64 million viewers.

Thursday Night Football” ticked up slightly from last week’s Chargers-Broncos game with a Packers-Bears slog that went from a 6-3 halftime score to a 26-10 knockout, drawing a 3.0 in the demo and 10.5 million viewers. “TNF” tends to adjust up once final numbers come in, and CBS will once again win the night.

As a reminder, most of these shows will see viewership gains of at least 50% once viewing within three and seven days is counted. But if the first two weeks of C3 (or commercial) ratings are any indication, most of those gains won’t translate into the deliveries networks promise advertisers.