Tales of the Unexpected. S09 E10. Mr. Know-All.

First broadcast 13th May 1988.

Elly Somerton is working for the summer as a hotel receptionist.

Topol ... Professor Max Kelada
Kim Thomson ... Elly Somerton
Edward Wiley ... Jasper Cranley
Leslie Lyon ... Lizzie Cranley
Peter Frye ... Professor Maddox
Steve Plytas ... Professor Daxatides
Eamonn Walker ... Bates
Steffanie Pitt ... Angela Dalton
Erika Hoffman ... Suzie Anderson
Ralph G. Morse ... Hotel Guest