Episode 139
Season 28 – Production code 12D4
Written by Thomas Himinez
Zylons…the true scourage of the universe.
In the 24th century, a great war is about to be decided. But the Doctor and Comdr. Triyad may find themselves on the opposite side of humanity.
Ripples which play havoc with the time stream, a war machine ready to invade, and a weapon of unimagined power all speak of a final battle which will determine the fate of the galaxy for centuries…if the galaxy can survive.
It will all be finished in 24 hours…one way or another…
Running time 74 minutes