The white body suits used for the Visitors' conversion process reveal every curve of the human body. There are extended scenes where a young woman moans and writhes in the body suit, virtually looking naked.

The Visitors observe footage of a man and woman having sex. This is a brief instance, and graphic nudity is cropped out.

A couple is seen making out in bed. It is implied that they are unclothed, but there is no graphic nudity.

At the beginning of the first episode, a main character has a drawn-out nightmare in which his son is gunned down by Visitors. There is no blood, but we can see the child tumbling down after being visibly hit by a laser blast.

The false human flesh of the Visitors is occasionally torn off, revealing their true reptilian forms. There is no bloodshed.

Action scenes often consist of intense guerrilla warfare with guns, explosives, and lasers.

The character Robin is pregnant with a Visitor's children, and her water eventually breaks, staining the floor a dark shade of green.

Two main characters have a tense altercation.

A pregnant character must have a Caesarean section in order to have her children. Nothing graphic is shown during this scene.

The character Ham Tyler attacks a squadron of Visitors with high explosives.

Infrequent use of "damn" and "hell."

Some religious exclamations

Daniel and a visitor are seen smoking what is implied to be Marijuana in a pod. The visitor while stoned goes to the garbage can to get a live mouse to eat.

Through a pair of binoculars, humans are seen unconscious and encapsulated as they move through a Visitor food processing plant on a conveyor belt.

Upon accidentally witnessing the true reptilian form of a Visitor, the teenage character Robin pleads for an abortion. Her procedure begins later in Part One, but the main character performing it, a nurse, calls it off. As the show progresses, Robin dreads what her offspring will resemble, especially at the sight of other lizards.

The main character Donovan becomes the enemy of his mother, who has joined forces with the fascist Visitors. She threatens to kill him and have custody of his abducted son.

Diana can be an unsettling antagonist, occasionally smiling wickedly or throwing fits of unbridled rage.

A rather dimwitted Visitor catches a live mouse in an outdoor trash receptacle and swallows it whole in front of an elderly man, disturbing him. The Visitor is reprimanded by another one, and it is implied that the elderly man is disposed of as a cover-up.

Elizabeth, a young cross-breed of human and Visitor, spits venom on another child. The child survives, despite being badly hurt.

An intense childbirth sequence, a teenage girl second baby is a fully lizard alien.