Health Minister Lesley Griffiths says she does not consider mephedrone use 'a huge problem' in Wales.
But she added that educating people about it now will raise awareness of the dangers and help prevent people trying the substance in future.
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The owners of what some people claim to be the 'Welsh Holy Grail' are offering a cash reward for the ancient artefact's safe return.
Staying mostly dry overnight with generally light winds, but cloud and wind will gradually increase from the northwest from the early hours.
In the last programme we've been to meet two Welsh entrepreneurs who chose a different route and we visit the Energy Centre at Coleg Menai.