'Dexter' hits season high

Showtime's Dexter hit a season high on Sunday.

The serial thriller drew 1.9 million viewers, up 9% from last week and marking the show's biggest audience so far this season. When you add Sunday encore airing, the show had 2.3 million viewers.

Meanwhile the fifth season finale of E!'s Keeping Up with the Kardashians drew a hefty 4.1 million viewers, ranking as one of the Top 10 most-watched E! telecasts in the last 20 years.

HBO's Boardwalk Empire was roughly steady with 2.8 million viewers. Comedies Eastbound & Down and Bored to Death both rose slightly to 1.4 million and 1 million, respectively.