Dick Wolf’s three-way crossover gained momentum as it went on. It kicked off with a 1.6 Live+same day rating for Chicago Fire on Tuesday, followed by Chicago PD (1.8) at 9 PM and Law & Order: SVU (2.0) at 10 PM last night. (NBC made it a full crossover lineup, with a repeat of the Tuesday Chicago Fire episode opening the night at 8 PM.)  NBC claimed the two highest rated drama telecasts last night with PD and SVU, both up double-digits from last week (+20% and +11%, respectively).

Airing against them, CBS’ crime dramas, veteran Criminal Minds (1.7) and newbie CSI: Cyber (1.2), were both down from last week — by -15% and -20% — to new lows.  For those keeping score, even with the downward adjustment in the finals, Stalker (1.3), returning on Monday after a very long hiatus, edged fellow freshman bubble drama CSI: Cyber (1.2) in Live+same day. The latter provides bigger economic upside for CBS as it is owned by sibling CBS Studios and part of a major, money-making franchise for the studio. CBS’ Wednesday slump started at 8 PM with Survivor (2.1, down -9% from its fast national last week.) The network still finished first for the night in total viewers and second in 18-49 behind ABC.

ABC’s lineup was largely status quo aside from an -11% uptick for The Middle (2.0). The Goldbergs (2.1), Modern Family (2.9) and Nashville (1.3) matched their fast nationals from last week, while Black-ish (2.0) was down a tenth.

As the season trimmed down tamerican Idol Russell croweo its final four on American Idol (1.6 ) last night, the veteran singing competition perked up a tenth from last Wednesday to its best showing in four weeks. Possibly contributing to the uptick was some extra star power, with Gotham’s David Mazouz, who plays the young Bruce Wayne, and Camrem Bicondova, who plays a teen Catwoman, in the audience and  appearances by Martina McBride, former Idol judge and Aerosmith frontman Steven Tyler plus Russell Crowe, promoting his directorial effort The Water Diviner.

On the CW, Arrow (0.8) was down -20% from last week; Supernatural (0.7) was even.