Erica, now officially in charge of the global Fifth Column, leads them in a high risk attack against Anna. Anna meanwhile, growing closer in her plan to destroy humanity, finds a major obstacle in a certain Live Aboard candidate; and Ryan sneaks back onto the Mothership to try and rescue his daughter.
Elenco: Elizabeth Mitchell , Morena Baccarin , Alan Tudyk , Brittney Irvin , Charles Mesure , Christopher Shyer , David Richmond-Peck , Joel Gretsch , Laura Vandervoort , Logan Huffman , Lourdes Benedicto , Mark Hildreth , Morris Chestnut , Scott Wolf .