Invasion (2005) Episode Guide

Hurricane Eve leaves Homestead physically devastated and increasingly divided. Russell searches for explanations, Mariel struggles with unsettling changes, and Sheriff Tom Underlay offers reassurance that rarely feels reassuring. The season gradually moves from domestic unease to a larger struggle over the community’s future.

Episode 1: Pilot

Skully’s Pick

A hurricane strikes Homestead, bringing mysterious lights and disappearances as Russell tries to protect his family. The storm provides the spectacle, but the more effective chills arrive when familiar people return and something about them feels wrong.

Episode 2: Lights Out

Russell discovers a wounded Air Force officer whose injuries resemble Dave’s, while Mariel encounters disturbing medical evidence. The investigation gains something more substantial than strange sightings, making the sheriff’s restrictions increasingly difficult to accept at face value.

Episode 3: Watershed

Jesse and Kira’s investigation of a motor home ends dangerously, while Larkin suspects a military cover-up. The younger characters become directly involved in the mystery, undermining the adults’ assumption that keeping secrets will keep their children safe.

Episode 4: Alpha Male

Escaped animals and fears of infection bring Russell and Tom together on a search. Their uneasy cooperation highlights competing approaches to authority, while the possibility of disease gives the town another reason to fear contact with outsiders.

Episode 5: Unnatural Selection

A fatal shooting involving Russell’s colleague raises questions about Tom’s actions, while Larkin investigates a military connection. Mariel’s introduction to a survivors’ group suggests that the people changed by the hurricane are beginning to find one another.

Episode 6: The Hunt

A refugee’s account of losing his family to the lights encourages Russell to try capturing one of the creatures. His search shifts from gathering clues to pursuing physical proof, with considerably more risk than an ordinary fishing trip.

Episode 7: Fish Story

Larkin survives a car crash but must accept help from a stranger whose behaviour makes her suspicious. Isolated from the others and worried about her pregnancy, she faces the uncomfortable task of deciding whom to trust without reliable evidence.

Episode 8: The Cradle

An abandoned baby draws Russell into a troubling family situation, while Mariel makes a discovery beneath the water. Questions about parental attachment give the alien mystery a particularly unsettling dimension: what happens when familiar bonds no longer feel familiar?

Episode 9: The Dredge

Russell comes under suspicion in a murder investigation, exposing a past that unsettles Larkin. Meanwhile, Mariel wants answers about a body in the bay. The episode makes secrecy a problem on both sides of the apparent human–alien divide.

Episode 10: Origin of Species

Dave’s online investigation attracts readers who abduct him to discover exactly what he knows. His enthusiasm for exposing a conspiracy suddenly has personal consequences, while developments involving Tom and Deputy Sirk deepen the mystery of the changed residents.

Episode 11: Us or Them

Russell confronts Mariel about her transformation, while Tom oversees Sirk’s recovery. The central question becomes harder to avoid: if somebody retains their memories and attachments, how much physical change is enough to make them a different person?

Episode 12: Power

Tom takes the children on an unannounced trip, leaving Russell and Mariel searching for them. Their shared concern draws the former couple together, creating fresh tension with Larkin and turning existing family complications into an immediate source of fear.

Episode 13: Redemption

Skully’s Pick

After being shot, Tom relives the plane crash that changed his life in 1996. William Fichtner takes centre stage as the sheriff’s history becomes clearer, adding context to a man whose apparent certainty has concealed considerable mystery.

Episode 14: All God’s Creatures

Russell, Larkin and Dave discover what has been lurking around their home, while Kira presses for answers about her family. The investigation becomes increasingly domestic, making even the house feel like somewhere that can no longer be taken for granted.

Episode 15: The Nest

Kira’s search for explanations draws her towards dangerous company, while Russell helps Mariel investigate abnormalities in her blood. Scientific testing and teenage frustration run alongside each other, showing the different risks people take when reassuring explanations stop working.

Episode 16: The Fittest

Russell and Tom pursue Derek and Christina, encountering a suspicious group of migrant workers along the way. Their reluctant partnership becomes more important as differences among the hybrids complicate any straightforward distinction between allies and enemies.

Episode 17: The Key

Christina forces Mariel to examine her rapidly developing pregnancy, while Russell and Dave investigate what intelligence agencies know about the hybrids. The episode introduces a more disturbing reproductive dimension to a mystery already rooted in bodily transformation.

Episode 18: Re-Evolution

Russell and Dave reach the island where Szura has been gathering hybrids, discovering evidence of a more organised operation. The widening scope changes the atmosphere: this no longer looks like a collection of isolated people struggling with unusual symptoms.

Episode 19: The Son Also Rises

Russell risks his livelihood by exposing what he has discovered, while unsettling changes spread through the children’s school. With another hurricane approaching, the town’s divisions begin to look less like temporary tensions and more like preparation for confrontation.

Episode 20: Run and Gun

Russell and Tom search for Szura as the approaching storm leaves little time to protect their families. The pace accelerates sharply, forcing two men with plenty of reasons for mutual distrust to depend on each other.

Episode 21: Round Up

As the hurricane arrives, Mariel, Larkin and the children are taken away by apparent National Guard personnel. Promises of protection become deeply suspect, while Russell and Tom struggle to stop Szura’s plans before the chaos overwhelms them.

Episode 22: The Last Wave Goodbye

Skully’s Pick

Russell and Tom attempt a rescue as the hybrids round up residents and frightened humans take hostages of their own. A tense finale brings the family drama and wider crisis together, before a desperate decision leaves the story unresolved.

Ending note: This is the final produced episode, not the conclusion of the planned story. Its cliffhanger was never resolved in a second season.