Who killed Rosie Larsen? That's the question "The Killing
" proposed in its first season on AMC, but then famously never answered
in its 13-episode run. Now, with Season 2 looming (two-hour premiere airs Sun., Apr. 1, 8 p.m. ET), do viewers even remember the major players? Or care
?We can't answer the latter -- the ratings will be an interesting thing to track this season, for sure -- but if you need a refresher on "The Killing," we've got ...