This is the one episode that remains with me to this day, I was a 10 year old when it first aired!

A famous and accomplished sculpture’s works are on limited display in a garden devoted to his work. Access is only provided by permission of the dean of the local art college, according to the will of the owner of the statues. An eccentric caretaker of the exhibit is himself a budding artist and is haunted by the fabulous success of the sculpture to whom the garden is devoted. Both the sculpture and the owner of the statues disappeared under mysterious circumstances. When more visitors start disappearing, the solution is there, chiseled in stone!