I really like collections of short stories but they are sometimes hard to find. This is a really great collection with stories by a lot of very well known writers from the UK:
A Greater Evil (Evil is Done in the US) is the 8th Trish Maguire book by Natasha Cooper.
"The clay was dead between his fingers. Cold and sticky as always, but unco-operative too. It smelled of decay. He wasn't a fool: he knew it was his mind and not the stuff itself that was the problem."