Here comes the only cast-out iron guarantee available on British radio.

By one o'clock today, if you keep your dial locked to LBC, you will know more than you do now.

Guaranteed, or your money back.

I can't guarantee that it will be useful information, or indeed information that you subsequently feel grateful for having absorbed.

But you will have more of it by one o'clock

than you do now, because this is Mystery Hour, your weekly opportunity to get an answer to the

question that has had you puzzled for the longest time. To get your question on the board,

the number you need is 0845-6060973. A word of explanation, if you would, given that this is the first

time we've been broadcasting Mystery hour live right across the nation.

Frank's pleased, he's in Southport, says, great to have you back on DAB.

I've missed the fabulous mystery hour, but will our friends in the north ask questions already asked previously?

And there Frank helps us highlight one of the two rules that govern this hour of radio.

The only circumstances in which your question won't get on the board are, if it's repetitive,

if it's something with which we have dealt relatively recently,

and my esteemed colleague Jones the Engineer, and I can remember having dealt with it at some point in the past.

There is an archive on the website. It's great fun, actually, really wittily written.

LBC.co.com.uk, where you can find an account of the questions already asked and hopefully answered.

That's rule number one.

Rule number two is dullness.

So the chap's answering the phone today.

I've got their work cut out.

But dullness will not be tolerated.

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