When skitters approach the newly combined resistance force, the groups' interaction surprises everyone. Meanwhile, Tom finds out life-changing news just as the 2nd Mass c ...

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 be ...

Ben is placed in harm's way by someone who he thought he could trust. Tom captures another hostage. Weaver offers Matt a job to lift his spirits and make him feel useful. ...

Hal stumbles across bodies of de-harnessed kids and finds someone from his past. Tom and Anne grow closer. And Weaver's health deteriorates just as Tom discovers he may h ...

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. ...

While on patrol together, Ben and Hal try to help a young boy and wind up having their bikes stolen. ...

The 2nd Mass moves into an airport hanger, but the drafty conditions cause Anne to grow concerned about the group's health. ...

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 see ...

Three months have passed, now mobilized the 2nd Mass. persists on the run without Tom, but a flaw makes them prey to attack. Tom sees the traps of good and evil on the lo ...

With Weaver leading several squads of fighters against the aliens, Tom remains behind to help protect the civilians as they evacuate. But a major breach in security endan ...

As the 2nd Mass. prepares for a major assault, divisions within the ranks threaten to tear the group apart. Tom has difficulty processing the profound implications of Ann ...

The 2nd Mass. prepares to take the fight to the invaders with an assault on one of their bases. ...

Hal takes the lead fighting an unexpected threat against the children of the 2nd Mass. ...

Lt. Terry Clayton (guest star Henry Czerny - The Tudors) of the 7th Mass arrives with word that the aliens are on their way to attack the 2nd Mass. ...

Hal comes up with a risky new plan to rescue captured teenagers from the aliens, but it might require putting someone at risk. ...

Dr. Michael Harris joins the 2nd Mass with a theory about what might save the teenagers abducted by the aliens. But the plan could be derailed when Tom starts digging for ...

The world is left in tatters after a sudden, unprovoked and unexplained invasion by aliens, leaving the planet's remaining human population to fight for survival against ...