The Invaders
Quantity: Unknown
TV Flash files “Quantity: Unknown” as hour 9 of 43 in the TV Flash guide — The Invaders (1967–1968) on ABC, season 1, episode 9, aired 1967-03-07, 60 min.
From the desk
How this hour is filed
This leaf is S01E09: listed hour 9 of 43 in the The Invaders guide, hour 9 of 17 in season 1. It aired 1967-03-07 (60 min). The listed hour before it is “Doomsday Minus One” (S01E08). Next is “The Innocent” (S01E10).

Catalog log
Broadcast listing — not a TV Flash recap.
David tries to unravel the mystery of a metal cylinder found at the site of a plane crash.
Viewer FAQ
Where does Quantity: Unknown sit in the The Invaders guide?
S01E09 is listed hour 9 of 43 — hour 9 of 17 in season 1, season 1 episode 9.
When did The Invaders S01E09 air?
Quantity: Unknown aired 1967-03-07 and is listed at 60 minutes.
Where should I start?
Vincent alone against the occupation — Thinnes, business-suit aliens, hunt structure — is the paranoid contract. Start at the beginning of the short run if you want the isolation intact.
In the series
Why this series still plays
The Invaders is Quinn Martin's alien-occupation nightmare in a business suit: Roy Thinnes as architect David Vincent, the only man who knows they are here, chasing disappearing corpses and crooked little fingers. It borrows The Fugitive's hunt structure and loads it with UFO dread. Two seasons of paranoid sci-fi that treat suburbia as camouflage — appointment fear, not camp saucers.
Two seasons. **Forty-three episodes.** That is the whole window, and it was enough to mint a cult classic of 1960s alien-invasion television. The Invaders is Quinn Martin's occupation nightmare in a business suit: Roy Thinnes as architect David Vincent, the only man who knows they are here, chasing disappearing corpses and crooked little fingers. Larry Cohen's ABC series (1967–1968) borrows The Fugitive's hunt structure and loads it with UFO dread. Kent Smith's Edgar Scoville joins the later fight. Rex will toast…
Filed against
- Roy Thinnes as David Vincent
Roy Thinnes's David Vincent chased The Invaders as Quinn Martin's alien-occupation nightmare in a business suit — the only man who knows they are here, disappearing corpses, crooked little fingers. Fugitive hunt structure loaded with UFO…
- Kent Smith as Edgar Scoville
Kent Smith's Edgar Scoville joined The Invaders' business-suit nightmare — Quinn Martin's alien-occupation hunt, Roy Thinnes as the architect who knows they are here, disappearing corpses and crooked little fingers. UFO dread on a…