Sunday night, AMC aired the season finale of The Killing, the network's murder mystery about a pair of Seattle detectives trying to find the villain responsible for the drowning death of a teenage girl, Rosie Larsen. After many twists and turns, the show's killer was revealed to be...the creators, who took a very promising idea (which they got from the original Danish series it was based on) and transformed it into a remarkably underwhelming show. At this point, we're not very enthused that AMC has renewed the show for a second season, but since it is going to return, we hope the show runners can learn from their mistakes. In the hope that we might help them get it right, here are seven ways AMC can improve The Killing.