Login to unlock this video.
If you don't already have an account, sign up to enjoy more TVNZ content anytime, anywhere.
AO Determined to get back to Earth-2, Barry travels back in time and masquerades as his earlier self to get his arch-nemesis Dr. Harrison to teach him how to run faster.
This show is no longer available on TVNZ OnDemand
Titles, characters and all other elements are the trade marks and copyright of TVNZ or its licensors. All rights reserved. Further details available here.