Aha!  I recognize Sleazo's motel scene. 

I have the same scene, and I've run into the same problem.  (It's not peculiar
to Sleazo's scene; common to most four-walled scenes)

Here's the deal:  The walls of the room are one-sided surfaces, pointing inward. 
This means that Poser's cameras can look through them in Preview mode,
but can't look through them in Render mode.   What you're seeing in Render
is actually the wallpaper of the nearest wall.  In a real building you wouldn't
be able to see through the walls in any mode, so this effect is surprising
until you get used to it.

The demo image here is from my Arcade Hotel, which has similar one-sided walls.

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