There Are No Words - S1.E19

The scientific library urgently contacts Dr. Morris and asks him to come to their building. It seems that all the words have vanished from all his old papers, and now seems to be spreading to all the other books in the same section.

Not long after this the same thing starts happening at the Wiseman's house, the only connection between the two is that Dr. Morris has been to both of them. Dr. Morris and Michael have to find out what is causing this "virus" and how to stop it, before it spreads across the whole world!