Season 1 (Invasion)

The first season of the ABC sci-fi series Invasion premiered September 28, 2010 and concluded after twenty-two episodes on May 17, 2011. The season averaged million U.S. viewers.
== Premise ==
The first season follows the immediate aftermath of the invasion and supposed worldwide decimation. The survivors attempt to figure out why they were chosen to survive, while attempting to figure out who the traitor in their midst is.
== Cast ==
=== Main ===
*Josh Holloway as Adam Tyler
*Danielle Nicolet as Alissa Tyler
*Amy Acker as Sara Tyler
*Mike Vogel as Derek Marsh
*Nick Zano as Colin Brody
*Cobie Smulders as Maya Davidson
*Yvonne Strahovski as Grace
*Tom Cavanagh as Isaac Knight
=== Recurring ===
== Episodes ==
Series Num. 	Season Num. 	Episode title 	Original airdate 	U.S. viewers (millions) 	Centric character(s)
1 	1 	"Pilot" 	September 28, 2010 	15.06 	Various
When a catastrophic event hits the globe, a small section of Washington D.C. seems to be the only part of the world spared. As the survivors attempt to make sense of what happened, they discover that not everything is as it seems. 	When a catastrophic event hits the globe, a small section of Washington D.C. seems to be the only part of the world spared. As the survivors attempt to make sense of what happened, they discover that not everything is as it seems. 	When a catastrophic event hits the globe, a small section of Washington D.C. seems to be the only part of the world spared. As the survivors attempt to make sense of what happened, they discover that not everything is as it seems. 	When a catastrophic event hits the globe, a small section of Washington D.C. seems to be the only part of the world spared. As the survivors attempt to make sense of what happened, they discover that not everything is as it seems. 	When a catastrophic event hits the globe, a small section of Washington D.C. seems to be the only part of the world spared. As the survivors attempt to make sense of what happened, they discover that not everything is as it seems. 	When a catastrophic event hits the globe, a small section of Washington D.C. seems to be the only part of the world spared. As the survivors attempt to make sense of what happened, they discover that not everything is as it seems.
2 	2 	"The Governor's Wife" 	October 5, 2010 	14.81 	Adam & Alissa
As Adam struggles to adapt to the new way of life, Alissa learns she has become a target due to her husband's new title. Meanwhile, Isaac studies the city border, Derek and Mia search for survivors, and, in flashbacks, we see Alissa's road from college dropout to the governor's wife.	As Adam struggles to adapt to the new way of life, Alissa learns she has become a target due to her husband's new title. Meanwhile, Isaac studies the city border, Derek and Mia search for survivors, and, in flashbacks, we see Alissa's road from college dropout to the governor's wife.	As Adam struggles to adapt to the new way of life, Alissa learns she has become a target due to her husband's new title. Meanwhile, Isaac studies the city border, Derek and Mia search for survivors, and, in flashbacks, we see Alissa's road from college dropout to the governor's wife.	As Adam struggles to adapt to the new way of life, Alissa learns she has become a target due to her husband's new title. Meanwhile, Isaac studies the city border, Derek and Mia search for survivors, and, in flashbacks, we see Alissa's road from college dropout to the governor's wife.	As Adam struggles to adapt to the new way of life, Alissa learns she has become a target due to her husband's new title. Meanwhile, Isaac studies the city border, Derek and Mia search for survivors, and, in flashbacks, we see Alissa's road from college dropout to the governor's wife.	As Adam struggles to adapt to the new way of life, Alissa learns she has become a target due to her husband's new title. Meanwhile, Isaac studies the city border, Derek and Mia search for survivors, and, in flashbacks, we see Alissa's road from college dropout to the governor's wife.
3 	3 	 	October 12, 2010 	14.85 	Adam
 	 	 	 	 	
4 	4 	 	October 19, 2010 	14.70 	Derek
 	 	 	 	 	
5 	5 	 	October 26, 2010 	14.40 	Alissa
 	 	 	 	 	
6 	6 	 	November 9, 2010 	14.47 	Sara
 	 	 	 	 	
7 	7 	 	November 16, 2010 	14.66 	Maya
 	 	 	 	 	
8 	8 	 	November 23, 2010 	14.06 	Isaac
 	 	 	 	 	
9 	9 	 	November 30, 2010 	13.89 	Colin
 	 	 	 	 	
10 	10 	 	December 7, 2010 	14.89 	Grace
 	 	 	 	 	
11 	11 	 	January 4, 2011 	13.93 	
 	 	 	 	 	
12 	12 	 	January 11, 2011 	13.29 	
 	 	 	 	 	
13 	13 	 	January 18, 2011 	12.68 	
 	 	 	 	 	
14 	14 	 	February 8, 2011 	13.30 	
 	 	 	 	 	
15 	15 	 	February 15, 2011 	13.65 	
 	 	 	 	 	
16 	16 	 	February 22, 2011 	13.59 	
 	 	 	 	 	
17 	17 	 	March 22, 2011 	14.30 	
 	 	 	 	 	
18 	18 	 	March 29, 2011 	14.10 	
 	 	 	 	 	
19 	19 	 	April 26, 2011 	13.73 	
 	 	 	 	 	
20 	20 	 	May 3, 2011 	14.30 	
 	 	 	 	 	
21 	21 	 	May 10, 2011 	14.76 	
 	 	 	 	 	
22 	22 	"Darkness on the Edge of Town" 	May 17, 2011 	15.54