Falling Skies was renewed for a fifth and final season, which began airing June 28, 2015, and concluded August 30, 2015.

Tom, sick of Pope's constant complaining and vitriol, kicks him out of the 2nd Mass; several others including Anthony go with him.

The 2nd Mass come across a naval station currently occupied by a group of soldiers under the command of female captain named Katie Marshall with whom Weaver once had a relationship.

Tom and his sons are imprisoned for conspiring with the Espheni; Anne is eventually arrested as well once the soldiers learn that her daughter was half-Espheni.

Weaver becomes suspicious of Katie's behavior, noting that she's not acting like her normal self (to which other soldiers agree); he follows her off-base one night and finds her talking to an overlord which he then kills after she leaves.

There, the queen explains that the attack on Earth is in revenge for a failed attempt 1,500 years before that led to the death of her daughter.

[1] On October 17, 2014, it was announced that Catalina Sandino Moreno had joined the cast in a major recurring role as a character called Isabella.