After the radical faction of the Fifth Column murders three Peace Ambassadors, Erica goes on a mission to hunt down their leader, Eli Cohn, a former Mossad agent. Meanwhile, as Jack and other priests around the globe begin to speak out against the Visitors, Anna heads to the Vatican in an effort to convince the leaders of organized religion that the Visitors truly are "of peace."

The episode was rated 7.51 from 270 votes.

Anna and Diana square off in the dark bowels of the Mothership - Diana has been down there for 15 years and not had a single glimpse of Anna. Meanwhile, Erica has Tyler's blood analyzed, and learns the V's did something sinister to her when she was pregnant with him.

The episode was rated 7.55 from 291 votes.

Erica learns her partner, Malik, is a Visitor and must fight for her life - literally - to stop Anna from finding out she's Fifth Column. Meanwhile, Anna learns that Malik is missing and orders Ryan to find her, while Lisa realizes her body is beginning to change, causing her to become more and more like her mother.

The episode was rated 7.57 from 280 votes.

Anna uses her newest gift to mankind, "Concordia," as a cover to hide an invading fleet of breeding vessels that will be used to ensure the perpetuation of Visitors for future generations. Meanwhile, Eli Cohn tries to convince Erica and the Fifth Column that the "Concordia" gala is the perfect time to assassinate Anna.

The episode was rated 7.64 from 273 votes.

With the world on the brink of war and chaos all around, is there anyone who can stand up to Anna? Ryan has been kept in isolation on the mothership, away from his hybrid baby so that Anna can experiment on her. Chad, seeking redemption for being used by Anna, now wants to fight with the Fifth Column. Erica goes on a journey to find a scientist who can give her the answers to what Red Sky is, and where she learns the horrifying secret of what the V's are doing on our planet.

The episode was rated 7.65 from 303 votes.

Erica, seeking revenge against Anna, heads to Hong Kong to carry out a mission to strike a lethal blow against Anna. Meanwhile, Anna learns that Tyler's phosphorous level is too low - even after the Red Rain -- and he might become useless to her; and Lisa and Diana bond, beginning to form an alliance against Anna.

The episode was rated 7.73 from 259 votes.

Anna is focused on having Lisa breed with Tyler to ensure the evolution of the Visitors, while Erica and Diana enlist Lisa to stage a coup against Anna and remove her from power before humanity is destroyed. Erica and the Fifth Column join Lisa in the attempted coup, which has devastating results.

The episode was rated 7.74 from 308 votes.

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.

The episode was rated 7.74 from 258 votes.

Anna is about to pull the switch on the planet's first Blue Energy reactor, but Sid realizes that the size of the reactor is much too large for just the various Concordia sites - the Fifth Column needs to figure out what Anna is really up to. And Diana tells Lisa she must act against Anna now, fulfill her destiny and save humans from annihilation.

The episode was rated 7.85 from 264 votes.

Anna, enraged at the increasing audacity of the Fifth Column attacks, enlists Ryan in an attempt to wipe out the Fifth Column in one fell swoop. Meanwhile, Father Travis, following Vatican orders, asks Jack to leave the church, and Lisa meets Diana, her grandmother -- who Anna said was dead -- for the first time.

The episode was rated 8.02 from 264 votes.