Science Fiction Theatre
Marked Danger
TV Flash files “Marked Danger” as hour 11 of 78 in the TV Flash guide — Science Fiction Theatre (1955–1957) on Syndication, season 1, episode 11, aired 1955-06-18, 30 min.
From the desk
How this hour is filed
This leaf is S01E11: listed hour 11 of 78 in the Science Fiction Theatre guide, hour 11 of 39 in season 1. It aired 1955-06-18 (30 min). The listed hour before it is “Conversation with an Ape” (S01E10). Next is “Hour of Nightmare” (S01E12).
Viewer FAQ
Where does Marked Danger sit in the Science Fiction Theatre guide?
S01E11 is listed hour 11 of 78 — hour 11 of 39 in season 1, season 1 episode 11.
When did Science Fiction Theatre S01E11 air?
Marked Danger aired 1955-06-18 and is listed at 30 minutes.
Where should I start?
Start with Truman Bradley's host lectures, then a 'plausible wonder' half-hour. The lab-coat framing is the difference from kid space opera.
In the series
Why this series still plays
Science Fiction Theatre is sci-fi for grown-ups in a lab coat: host Truman Bradley's deadpan science lectures and plausible wonders. Adult-leaning anthology that bridges pulp kids' shows and Twilight Zone seriousness. Watch it in 2026 as 1950s educational futurism — the weekly promise that tomorrow was a demonstration, not a monster.
So about the lab coat. (Spoiler-free, mostly: the monster does not have to arrive. That is the twist, and also the anti-twist.) Science Fiction Theatre (syndication, 1955–1957) is sci-fi for grown-ups: host Truman Bradley's deadpan science lectures and plausible wonders, produced by Ivan Tors, seventy-eight episodes, two seasons. Adult-leaning anthology that bridges pulp kids' shows and later Twilight Zone seriousness. Weekly promise that tomorrow was a demonstration, not a monster. Educational futurism with a…
Filed against
- Truman Bradley as Host
Truman Bradley hosted Science Fiction Theatre in a lab coat — deadpan science lectures, plausible wonders, 1950s sci-fi for grown-ups instead of pulp kids’ hour. Adult-leaning anthology that bridges Saturday serials and Twilight Zone…