Norman Wisdom???

ok quite a while ago norman wisdom was in casualty but i was too younge to really watch it , i dunno why i jsut missed it , but now i really wanna see it becuase it was his only serious acting where he doesnt fool around i would just like to know if there are clips on the internet or if anyone knows a dvd with it on or something i just really want to see that epesode of casualty , one last things , does casualty sell the seasons if so i would like to get that one lol it was season 13 epesode 8 it was called " she loved the rain "