Looks at the inspiring story of Joan Procter, a pioneering female scientist who loved reptiles.

"The Tower of London holds almost a thousand years' worth of secrets! The Tower of London draws more than 2 million visitors a year! Almost 1,000 years old and first built by William the Conqueror in 1066, the tower has been a fortress, a palace, a zoo, and an exhibit site for the amazing Crown Jewels. But the tower's reputation as a prison is probably what accounts for its popularity! Two young princes in the time of King Richard III were never again...