Cable television network AMC on Thursday assured frustrated viewers of drama series "The Killing" that the central murder case would be wrapped up in the second season of the show.

AMC's original programing chief Joel Stillerman also acknowledged that the network "should have managed expectations better" when it ended the first season with a cliffhanger over the identity of the murderer.

"You will find out who killed Rosie Larsen in season two, definitely," Stillerman told television journalists.

"We are incredibly proud of the show as a whole. But we definitely did not manage expectations as we should have," he added.

"The Killing", a slow burning, character-driven series with dozens of twists and turns, was promoted by AMC over 12 episodes with the tagline "Who Killed Rosie Larson?".

But the first season ended in June without solving the crime, provoking protests from critics and fans alike.

Two of the show's stars -- actresses Mireille Enos and Michelle Forbes -- have been nominated for 2011 Emmy Awards.