Invasion: Season 1, Episode 17

The Key

Mariel begrudgingly performs an ultrasound when Christina demands to know what is growing so quickly inside of her. After the school reopens, Jesse is bothered by the way; some of the fellow students are acting. Russell and Dave investigate what Healy knew about the hybrids.

Writing:
  • Shaun Cassidy
  • Michael Dinner
  • Thomas Schlamme

Stars:
Release Date: 2005-09-21
Seasons: 1
TMDb: 7.1/10
  • Country: US
  • Language: English
  • Runtime: 42

Other episodes for this season

Pilot
Episode 1 - Pilot
Lights Out
Episode 2 - Lights Out
Watershed
Episode 3 - Watershed
Alpha Male
Episode 4 - Alpha Male
Unnatural Selection
Episode 5 - Unnatural Selection
The Hunt
Episode 6 - The Hunt
Fish Story
Episode 7 - Fish Story
The Cradle
Episode 8 - The Cradle
The Dredge
Episode 9 - The Dredge
Origin of Species
Episode 10 - Origin of Species
Us or Them
Episode 11 - Us or Them
Power
Episode 12 - Power
Redemption
Episode 13 - Redemption
All God's Creatures
Episode 14 - All God's Creatures
The Nest
Episode 15 - The Nest
The Fittest
Episode 16 - The Fittest
The Key
Episode 17 - The Key
Re-Evolution
Episode 18 - Re-Evolution
The Son Also Rises
Episode 19 - The Son Also Rises
Run and Gun
Episode 20 - Run and Gun
Round Up
Episode 21 - Round Up
The Last Wave Goodbye
Episode 22 - The Last Wave Goodbye