Deep in Texas there is a fantastic legend - that in the mid 1800's a giant flying reptile was caught and killed by cowboys out on the range. Scientists of the time identified it as a "Terodactyl", a specimen of dinosaur not seen for millions of years. Did such a creature truly exsist only a few years ago? And are modern sightings and encounters of the same animal? The world of mysteries crew sets out to find the answers.