Person Of Interest
Credit: CBS

What a nifty slow-growth hit Person of Interest turned out to be.

The J.J. Abrams’-produced crime series launched this fall to fairly decent debut. Then it slipped into the ratings doldrums. In the past couple months, however, the show has seemed to find its legs, even as most shows on Thursday nights have slipped. Last night POI, aided by a repeat of Big Bang Theory as a lead-in instead of Rob, drew 15.8 million viewers and a 3.4 rating in the adult demo — all-time highs in both metrics. (And, yes, a Big Bang repeat does better than a Rob original). ABC being in repeats helped too.

POI doing well helped The Mentalist (13.8 million, 2.8) dominate at 10 p.m. And the 8 p.m. original Big Bang (15.2 million, 5.1) won the night in the demo.

Fox’s American Idol (17 million, 4.8) was down 11 percent. The Finder (7.3 million, 2.3) was up 15 percent from two weeks ago.

Also, the second episode of NBC’s Awake (4.3 million, 1.6) unfortunately fell 20 percent from last week’s premiere. The network’s comedy block was up slightly from last week.