One girl leaves, but a new girl enters. That's what takes place on the new 'Persons Unknown' (Mon., 8PM ET on NBC).

[Spoiler alert.]

On the previous episode of the show, spoiled rich girl Tori (Kate Lang Johnson) managed to escape from the inescapable town. But her flight didn't go so well for her -- because now her dead body is found floating in a pool. Not good.

Meanwhile, a new woman shows up in town -- wearing dead Tori's old clothes. Our heroes can only identify "Erika" (Kandyse McClure) by the tattoo on her arm which spells out her name. They can't get any other information out of her for a simple reason; when Erika arrives, she's in a coma. But then, the new girl wakes up -- and promptly starts kicking everyone's ass. Not in a psychological sense: Erika actually literally beats up everyone that she meets.

What is going on? Who is Erika? It might be good if we got some answers soon -- because 'Persons Unknown' is in imminent danger of being canceled.

Kandyse McClure's 'Battlestar Galactica' character Lt. Anastasia Dualla was certainly behind the scenes to start, even though she played a crucial role. As the central person in the CIC (center-in-command) aboard the rickety battlestar, she was often first to hear the orders coming, and was always on top of incoming enemy Cylons. As the series progressed, she became more and more integral to the goings-on of the crew, and her character blossomed into one of the most riveting arcs of the whole series.

With a year gone by since the finale, McClure looks back on her 'BSG' run with a sincere fondness – enough to the point where she can hardly watch certain episodes. Now living in Toronto, and set to appear at Wizard World Toronto Comic Con, McClure sat down to talk with AOL TV about her life since 'BSG', what it was like being on such a groundbreaking show, and what she learned while walking the halls of the beleaguered battlestar.

(S04E11) Note: technically the Razor television movie counts as the first two episodes of the season, so this is actually episode 13. And what an episode it was! It answered the biggest question from the viewers and in the process created a few more.

FYI, the episode title is taken from the folk song "Goodnight, Irene", which pretty much fits the theme of the episode.

I really liked Mary McDonnell's acting in this episode. I felt heartbroken at her breakdown upon discovering the remains of Earth and her inability to share the information with the fleet. Whenever things get bad, at least we're not on the run from homicidal machines with our last great hope for sanctuary a radioactive wasteland.

On to the spoilery bits!