Leonardo da Vinci

Twenty years on, Olivia Graham tells how her dad helped return a stolen masterpiece - then got arrested.

Head of a Bear is more than 500 years old and has set a new record for a Leonardo da Vinci sketch.

The painting gained fame when its owner challenged the Louvre to prove it had the true Mona Lisa.

Poldark actor Aidan Turner is playing Leonardo da Vinci in a new historical drama.

The artwork has been returned to an Italian museum - whose staff were unaware it was missing.