WATCH: Which mega rock star has signed this guitar Sarah is posing with?

• Who has signed this guitar Sarah is holding?
• It can be all yours

It’s not Sherlock, it’s hard rock! But we still want you to Crack the Case.

An amazing Les Paul Epiphone Guitar signed by legendary rocker Slash is up for grabs!

Slash is rated one of the greatest rock guitarists of all time and used the Les Paul instrument (1959 Standard replica) for studio recordings on nearly all his massive hits with Guns N’ Roses, Slash's Snakepit, Velvet Revolver and his solo works.

Now Slash Featuring Myles Kennedy and The Conspirators have released their latest album; ‘4’.

According to the band’s website, this latest offering has "captured a certain 'magic' – the sound of five musicians and band mates listening to and playing off one another in the spirit of live, in-the-moment collaboration."

All you have to do to stand a chance of winning the signed guitar is listen to The Lizard weekday mornings and afternoons.

When you hear the cue to call, phone in!

Players will be asked which one of 25 numbered but mysterious cases they want to open. It could be new music from Slash, gift cards to local businesses, tickets for Rock The Lake, and of course, a Les Paul Epiphone Guitar signed by the legendary rocker!

You can also keep checking out The Lizard webpage to see which cases have been opened!

Choose wisely…