May 02, 2012 at 05:38 PM EDT

Here’s the secret to preventing ratings decline during May sweeps: Crossovers!

Tuesday night’s NCIS: Los Angeles received a boost by cross-breeding with Hawaii Five-0, the second hour of a two-part stunt that started on Monday night. NCIS: LA delivered 15 million viewers and a 3.0 rating in the adult demo, up 25 percent from its last airing. Plus, the show nearly tied NBC’s The Voice results show (8.9 million, 3.1) as the night’s top-rated series along with NCIS (17.2 million, 3.0 — and not needing any crossovers to kick butt, thank you very much).

As for everybody else– hey, look something shiny!

Some notables: Fox’s Glee (2.4) was down 11 percent, ABC’s Cougar Town (1.3) was down 13 percent, Private Practice (2.1) was down 5 percent, NBC’s Biggest Loser (2.1) finale was up a tick from last week. The CW’s L.A. Complex (0.3) was unchanged for Week 2.

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