The Flash
S01E10 Sight Unseen
Title: Hidden Threat Plot: A man who can turn invisible infiltrates Star Labs, unleashing a neurotoxin while Tina is trapped inside. As chaos ensues, he begins to eliminate the scientists involved in the project. The Flash races against time to locate the unseen assailant and rescue his friend from the deadly situation.
Season 1 Episodes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Pilot
Out of Control
Watching the Detectives
Honor Among Thieves
Double Vision
Sins of the Father
Child's Play
Shroud of Death
Ghost in the Machine
Sight Unseen
Beat the Clock
The Trickster
Tina, Is That You?
Be My Baby
Fast Forward
Deadly Nightshade
Captain Cold
Twin Streaks
Done with Mirrors
Good Night, Central City
Alpha
The Trial of the Trickster