Experts investigate an elaborately detailed gold mask of Ancient Greece.

The team investigates some of the most remarkable artefacts from Tutankhamun's tomb, including an exquisite piece of jewellery.

Roman dodecahedrons and baffling copper scrolls discovered in Israel come under the microscope next. Plus, a bizarre discovery in Whitby.

See one of the world's first batteries. Also, new details emerge about the death of Egypt's infamous Screaming Mummy.

A look at an ancient Greek device built to contain the knowledge of the cosmos and a colour-changing Roman cup.

The Enigma Machine, vital to Britain's Second World War effort is re-examined. Mysterious ancient markings on a stone door are discovered.

See one of the most famous coins ever discovered, and a death mask of a girl who drowned in Paris.

An obsidian mirror and the notorious Voynich Manuscript are among the magnificent items studied.

A tiny metal cube with a connection to Adolf Hitler is studied, along with the 300-year-old Berlin Gold Hat.

A look at the 'perfect listening bug' and a steam-powered 180-year-old mechanical engine that can solve complex math problems.

A look at the 11,000 year old skill of a deer, a decorated Bronze Age disk and a steampunk lightbulb.

First a mysterious neolithic stone ball, then Pulvermacher's electric chain belt will give you a shock and finally the case of the missing cat - mummy.

Experts investigate the shattered skull of a 19th century railway worker.

Experts explore a controversial machine designed to measure intelligence.

Experts examine an ancient tablet could be the key to a lost civilization.

Experts explore the only objects ever found in the Great Pyramid of Giza.

Experts investigate the mysterious purpose and identity behind this 9,000-year-old clay-covered artifact.

Experts examine the enigmatic mosaic adorned on the ancient Standard of Ur.

A museum in South London contains a disturbing tattered hat made of brown felt and decorated with more than 80 human teeth; using the latest imaging technology, experts investigate to uncover the macabre origins of this mysterious Victorian-era cap.

A minuscule metal sphere containing two microscopic holes could be the smallest murder weapon in history; experts explore how this tiny object is linked to one of the most bizarre true crime cases of the 20th century.