The Fox drama inches up yet again in its sixth episode.

It wouldn't be Thursday morning if we weren't pondering how Empire managed to grow its ratings yet again. The Fox drama, airing its sixth episode, again improved upon its previous scores — posting a 4.7 rating among adults 18-49 and 11.9 million viewers. Up a tenth of a point from the previous week, it added more than 400,000 viewers.

As for American Idol (2.7 adults), it shed four-tenths of a point from last Wednesday.

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ABC posted a largely steady block of comedies with The Middle (2.1 adults), The Goldbergs (2.3 adults) and Modern Family (3.3 adults) — though Black-ish (2.2 adults) was up by three-tenths of a point. Nashville (1.4 adults) was also steady.

The Mentalist (1.5 adults) notched a three-tenths improvement ahead of next week's series finale. Elsewhere on CBS, Criminal Minds (2.0 adults) and Stalker (1.4 adults) held steady.

On NBC, The Mysteries of Laura (1.1 adults) retained last week's score, as did Law & Order: SVU (1.4 adults). Chicago P.D. (1.4 adults) was the only series to lose any steam from last week, slipping just two-tenths of a point.

Arrow (1.0 adults) dropped two-tenths of a point on The CW ahead of a steady The 100 (0.6 adults).