Falling Skies

Three months after Tom Mason agreed to go with the alien invaders, Weaver is still in command of the 2nd Mass while Anne continues to serve as medic. They have seen many battles and are a much leaner unit now.

Tom is still haunted by memories of his time with the aliens and begins to wonder if they did something to his mind. Pope, who is in charge of questioning Tom, plants seeds of doubt about him among the group.

The 2nd Mass moves into an airport hanger but the conditions cause Anne to grow concerned about the group's health. The Berserkers hatch a plan to get rid of Tom. While dealing with a loss, the 2nd Mass receives a promise of hope.

While on patrol, Ben and Hal try to help a young boy and wind up having their bikes stolen. The hunt to recover them leads them to the discovery of something much bigger. Matt is put in danger. Weaver is reunited with a family member.

A familiar face returns to the 2nd Mass, but his intentions remain unknown. Meanwhile, a skitter is captured and brought back to the camp as a prisoner. And Hal bonds with Maggie as she begins to open up about her past.

Hal stumbles across bodies of de-harnessed kids and finds someone from his past. Tom and Anne grow closer. Weaver's health deteriorates as Tom discovers he may have been keeping important matters from the group in order to protect them.

Ben is placed in harm's way by someone he thought he could trust. Weaver offers Matt a job. When members of the 2nd Mass are trapped, the situation takes a turn for the worst when they find themselves faced with a new enemy.

The 2nd Mass pushes on to Charleston, but some are still grieving the group's recent losses. Weaver learns more about Tector's background before the invasion. And Matt begins to bond with a harnessed girl who was found recently.

The 2nd Mass meets new faces, while Tom comes across his former mentor and professor Arthur Manchester (guest star Terry O'Quinn).

When skitters approach the newly combined resistance force, the groups' interaction surprises everyone.