Season six of AMC’s hit zombie drama “The Walking Dead” ended with a cliffhanger, and the finale, which aired Sunday, showed signs of erosion, the AP reports.

The episode delivered 14.2 million viewers, according to Nielsen. “It was down from the 15.8 million who watched the fifth season finale on the night it aired, and didn’t approach the 17.3 million who watched the first episode of the fifth season in October 2014 — the show’s high point,” the AP reports.

The report adds: “It’s not unusual for hit shows to begin to fade after they have been on the air for a couple of years. A more complete barometer of the show’s performance will come in a few weeks, when the number of people who watched it via delayed viewing are counted in.”