The mystery walks are an outdoor escape room combined with a mystery tour. They are done using a mobile app.

For each one, there is a story with an overall mystery to solve. To do this, you solve puzzles to unlock each direction of a walking route.

Each step of the way there are detailed walking directions and live map showing where you're headed to next.

The puzzles also gradually build up a set clues to solve the overall mystery when the end of the walk is reached.

The puzzles are designed for adults although children may enjoy helping to spot clues and helping to solve some of the easier ones.

Every puzzle has a ladder of hints starting from harder and progressing to very easy to cater for a range of aptitudes.

A mystery typically takes around 2-3 hours to complete. It's not a race so you can take your time, take photos, stop for refreshments etc. and have a nice day out.

The price (per group) is £14.99.

Once a mystery has been downloaded, it runs completely offline using GPS with no need for a phone signal or data/internet connection (it's Cornwall-proof).

Download the app from the Apple Store or Google Play and then browse/purchase the mysteries using that.