4. Gronpoly (1997)
The Stevensons discover that Allen isn't the only intergalactic visitor to drop by Planet Earth... and the new alien on the block isn't very friendly.
Release date: 1997-12-06
Season number: 1
Episode number: 4
Runtime: minutes
Director: Paul Hoen
Rest of the cast - click here to expand
Jack Tate - Ken Stevenson