Possible Clues:

• Pictures I see on end of religious petition, sent back
• Place for a concession
• Business that has projected results
• Key people in charge of returning pictures
• Picture place
• Its patrons are usually kept in the dark
• Theater, the last word in comfort originally, heading west
• Mine engineer in California is looking to show 19 down to an audience
• CIA men vandalised picture-house
• Pictures of guys returning, arrested by US agents