I'm very confused about Alma Walker's storyline. At first, it is rumored that she was murdered by Dr. Thredson, but we later find out that the aliens took her. If she was taken by aliens, then why was Kit arrested? And why does Dr. Thredson tell Lana (when she is tied up in his basement) that he enjoyed the feel of Alma's skin? Also, in the last episode (SPOILER ALERT) Kit tells Lana that Alma died: did she die in the asylum?