In 1993, the Amtrak Railroad experienced the deadliest train crash in United States history.

47 passengers and crew were killed.

103 more were injured.

The cause of the accident was unclear. The clues to this mystery were etched

in twisted steel and buried in the mud of an Alabama bayou, waiting for investigators

to find them. Amtrak Sunset Limited is the country's only remaining transcontinental train.

The Sunset Limited has an interesting history.

Kind of dates back to the romantic time of train travel when it was very elegant and posh to

travel by train.

On September 20, 1993, Trudy Justin and her husband Larry boarded the Sunset Limited

in Deming, New Mexico, headed for Florida.

And I could sit there and look and talk to other people,

but the best part is going to the dining car.

We went to the dining car three times a day,

and you just trod back there, and they were really nice to you.

After dinner, Trudy and Loworry returned to their seats to rest.

The train stopped briefly in New Orleans to fix a broken air conditioner.

By 2.30 a.m. it was running about 33 minutes behind schedule.

It stopped in Mobile, Alabama, where the engineer waited until a freight train cleared the bridge up ahead.

Then, the sunset limit started on the last leg of its trip, 750 miles to Miami.

The train throttled up to a cruising speed of 72 miles an hour, but visibility was hindered by fog.

Shortly before 3 a.m., the sunset limit approached the bayou cannot bridge.

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