<human>: My brother is a reputable composer and arranger for TV and film scores. Through hard work over last decade, he was contracted to compose for an important American film score in middle 2015. His employer gave him several materials including a bound script with his name on the corner.My brother quietly scanned the script so he could have two scripts between American studios and home studios.

When he returned home for a break, I was so excited and kept pestering him to see the script. Initially he refused because of his contract. After a few days, he lent me the 2nd script over the week on the promise of secrecy.

I *left the script on a train seat* as I rushed to get off. I have called the train offices but they say nothing has been handed in. 

I am worried sick that someone may find the script and scan it onto the Internet. My brother worked hard and honestly for the job. I don't want my irresponsibility to ruin his film reputation. 

At the same time, what if he tells his employer that 'he' lost the script... but then the lost script is never uploaded to the Internet.

He expects the script back Saturday afternoon (28/11).

Can you provide a brief overview of the text?
<bot>: I lost my brother's secret film script on a train. Should he just tell his employer that he lost it (which will hurt his credibility in the film industry)?  Keep quiet and just hope the script is never found?