CBS’ Supergirl in Week 2 drew 8.9 million total viewers and a 2.2 demo rating (per finals), slipping 32 and 29 percent from its well-watched, high-rated launch, which led out of a fresh Big Bang Theory episode.

Big Bang this fall had averaged 15.8 mil and a 4.1 opening CBS’ Monday line-up, while Life in Pieces averaged 9 mil/2.1 at 8:30.

TVLine readers gave Supergirl Episode 2 an average grade of “B+,” matching its premiere results.

Continuing CBS’ night, another ridiculous yet entertaining (yet ridiculous) episode of Scorpion (9.5 mil/1.9) was steady, while NCIS: LA (8.4 mil/1.3) matched last episode’s season high.

Elsewhere…

FOX | Going head-to-head with Kara Zor-El, Gotham (4.3 mil/1.6) wast steady in audience and up a tenth in the demo. Minority Report (1.8 mil/0.6) was flat.

NBC | The Voice (12.1 mil/3.3) and Blindspot (8 mil/2.2) each ticked up, with the latter tying Supergirl as the night’s No. 1 drama.

ABC | Dancing With the Stars (12.1 mil/1.9) rose a tenth. That Castle-bumping CMA special did 5 mil/0.8.

THE CW | Crazy Ex (950K/0.3) and Jane (1.1 mil/0.4) both drew their largest audiences of the (young) season while inching up in the demo.

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