(Or, I Can't Be The First Person To Think Of This)
We enter the scene with Finch, the detective assigned to track down V, staggering into Victoria Station. He's heavily under the influence of LSD, a drug he took to try to understand the enigmatic killer, and although it's exacted a heavy mental toll, it's done its work well. He's finally close to V's lair...and its secrets.
He heads down into the abandoned Underground. At last, he spots V himself. He pulls out his gun...prepares to fire...
And suddenly a vast dog leaps past him, spoiling his aim! The dog, some sort of breed of Great Dane, lets out a strange and poignant howl. In Finch's drugged state, it almost seems as if it's calling out, "Roverrr here!"
V turns. He spots Finch, but seemingly just as importantly, he spots the massive dog. He moves towards the pair with a swift, gliding motion, and Finch knows they're both doomed...
When suddenly, a giant net drops from the ceiling onto V, entangling him! Finch stares in utter confusion as four people step from the shadows, four civilians who've managed to do what the entire British government could not--capture the terrorist known as V.
"Good work, Scooby!" they chorus, as one of them, a young man dressed in green, scratches the dog's head. Another, dressed in white, steps forward to V, who's only managed to free his head from the weighted net. "And now, let's see who V really is!" With a flourish, they remove the mask.
Everyone, even Finch, gasps. "Old Man McAllister!" they shout. The girl with spectacles nods knowingly. "Of course. He was using the V costume to frighten people away from organized governmental authority...and the old mill!"
"That's right," snarles V. "And I would have gotten away with it, too, if not for you meddling kids...and that dog!"