Ratings: America's Got Talent Surges, Plus the Latest On True Blood, Falling Skies

America’s Got Talent — all three hours of it — dominated this Tuesday’s ratings, leading NBC to a resounding all-around win.

AGT‘s audition extras followed by two Vegas rounds averaged 14.4 million total viewers, while scoring a 4.2 demo rating — delivering surges of 20 and 31 percent versus last week.

Elsewhere on the night, Fox’s MasterChef (4.8 mil/2.1) served up double-digit gains in both measures, while both ABC newbs 101 Ways to Leave a Game Show (4.85 mil/1.9) and Combat Hospital (4.34 mil/1.1) saw slight demo increases.

In the 10 pm hour, CBS’ 48 Hours Mystery special centered on the Casey Anthony verdict placed second, with 5.53 million viewers and a 1.3 rating.

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In other ratings news, True Blood dropped 47 percent from its boffo season opener, delivering 2.9 million total viewers and a 1.5 demo rating, TVByTheNumbers reports. But was the holiday weekend/local Sunday night fireworks to blame, or the fact that HBO GO subscribers had access to Episode 2 the entire week prior?

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TBTN also notes that TNT’s Falling Skies this Sunday barely slipped, down just 3 percent in viewers (to 4.07 mil) and 7 percent in the demo (to a 1.4 rating). Lead-in Leverage (2.5 mil/0.7), however, tumbled 30 percent in the demo.