
Broadcast 1 August 1948. Public-domain transfer from the Old Time Radio Researchers certified set at the Internet Archive.
The run
The Adventures of Sam Spade was first heard on ABC July 12, 1946, as a Friday-night summer series. The show clicked at once, and went into a regular fall lineup on CBS September 29, 1946. From then until 1949, Sam Spade was a Sunday-night thriller for Wildroot Cream Oil, starring Howard Duff in the title role.
Restoration quality — measured from the surviving files
Source collection
Old Time Radio Researchers Group
Rights
Public domain — no renewed US copyright
Cataloguing
Air dates and notes from the Archive item record
The shape of the run
12 dated broadcasts across 9 years on the air, with 4 years where nothing is known to survive. Brightness is transfer quality; empty cells are months lost to time.
Episodes
Start here
Restored broadcasts from 1943, in original transmission order.
8 Feb 1943 · 57 min
Broadcast 8 February 1943. Public-domain transfer from the Old Time Radio Researchers certified set at the Internet Archive.
10 Jan 1948 · 1h 1m
Transferred from the Internet Archive item “OTRR_Sam_Spade_Singles”, part of the Old Time Radio Researchers public-domain collections.
1 Aug 1948 · 30 min
Originally broadcast on CBS, 1 August 1948. Transferred from the Internet Archive's Old Time Radio Researchers collection (public domain).
3 Oct 1948 · 29 min
Originally broadcast on CBS, 3 October 1948. Transferred from the Internet Archive's Old Time Radio Researchers collection (public domain).
12 Dec 1948 · 24 min
Originally broadcast on CBS, 12 December 1948. Transferred from the Internet Archive's Old Time Radio Researchers collection (public domain).
17 Apr 1949 · 25 min
Broadcast 17 April 1949. Public-domain transfer from the Old Time Radio Researchers certified set at the Internet Archive.
17 Jul 1949 · 14 min
Originally broadcast on CBS, 17 July 1949. Restored from the Old Time Radio archives.
6 Nov 1949 · 27 min
Originally broadcast on CBS, 6 November 1949. Transferred from the Internet Archive's Old Time Radio Researchers collection (public domain).
Same night on the air
Everything else the archive still holds from the night of 1 Aug 1948.

Broadcast 1 August 1948. Public-domain transfer from the Old Time Radio Researchers certified set at the Internet Archive.

Public-domain transfer from the Internet Archive item “TheVoiceOfTheArmy”.
Also on CBS
Other series the network carried while The Adventures of Sam Spade was on the air.
Same seasons
Series in the same genre whose runs overlapped this one.
What it became
First-person narration, a case that walks in the door, and a city that talks back. Marlowe, Sam Spade and Johnny Dollar turned detection into a listening form.
Lineage is written by our editors, not inferred from listening data.
Descendants
Modern series carrying this form forward.
If you liked this
Chosen by the same editors.