Season
Season 1 Episode
- Season 1 Trees Made of Glass (1)
- Season 1 Trees Made of Glass (2)
- Season 1 Blood of the Children
- Season 1 The Burning
- Season 1 Shock
- Season 1 Pulse
- Season 1 The Order
- Season 1 Revelations
- Season 1 Progeny
- Season 1 The Crossing
- Season 1 Outbreak (a.k.a. Escalation)
- Season 1 Vigilante
- Season 1 Alienville
Threshold - Season 1 Episode 4 The Burning
7.01 41 minutes A patient at an psychiatric hospital in Ohio escapes and Molly believes he may have been infected by the alien signal after paintings of glass trees are found in his cell. After further investigation, it is suspected one of the missing Big Horn crew might be involved.
