There are some things you should always check, like the hygiene rating on your local takeaway,

the setting on your razor, and whether the party actually is fancy dress.

The other thing you should check is your Experian credit report, especially if you're looking to borrow money.

It lets you understand what lenders see, so you can increase your chances of getting the best deals.

It's dead easy to check it and completely free.

See it in seconds. Download the Experian app today.

Hello and welcome to the History Greatest Mysteries.

I'm Rob Atar, the editor of BBC History magazine.

This is episode two of this series,

and today we'll be heading back almost 2,000 years and exploring one of the most puzzling events from Roman history,

the disappearance of the 9th Legion. The last record of this elite army unit is in Northern

England in the early 2nd century AD, after which it simply vanished. Since then, numerous theories

have been put forward by historians, novelists and

filmmakers, and to pick through those, I was joined by Miles Russell, a senior lecturer, prehistoric

and Roman archaeology based at Bournemouth University. I began by asking him to explain

the history of the Legion prior to its disappearance.

The Ninth Legion is one of roughly on average about 30 elite army units in the Roman Empire

throughout the late 1st century BC and 1st century AD. The Roman army is quite unusual in that

it has two grades of soldier. You've got

the legionaries who are the ones, which you always see on TV and film today. They're the ones with

the plate armour, which are really quite distinctive. And they're basically citizens. They've got

the full rights of citizenship in the Roman Empire. They can own land and property and so on, they're

...