"Rizzoli & Isles" season 3, episode 3 - THE RATINGS!

From TV by the Numbers:

RIZZOLI & ISLES
TNT
9:00 PM
Viewers (million, Live+SD): 5.359
Adults 18-49 rating (Live+SD): 1.0

Edit: Further analysis from the same news source:

Rizzoli & Isles drew 5.4 million viewers (Live + Same Day) to ran k as basic cable's #1 program for the day. The episode was up +4% in total viewers compared to last week, while adults 18-49 grew by +7% to 1.3 million and adults 25-54 remained steady with 1.7 million.

And the ratings notes are HERE.
Absolutely Angie: A fan site with news, photos, and commentary related to "Rizzoli & Isles" star Angie Harmon.