The Captain, Data, and Dr. Crusher are trapped in the holodeck in a 1941 San Francisco Dixon Hill program due to a computer malfunction.

William Boyett (Lt. Dan Bell)
Lawrence Tierney (Cyrus Redblock)
Harvey Jason (Felix Leech)
Rhonda Aldrich (Madeline)
David Selburg (Lit-Historian Whalen)
Gary Armagnac (Lt. McNary)
Mike Genovese (Desk Sergeant)
Carolyn Allport (Jessica Bradley)

• Troi does not appear in this episode.
  
• This episode marks the birth of the "holodeck gone awry" plot mechanism.
  
• The Dixon Hill set was actually built and contained within the Holodeck set.