Chief and Rockapella in “Unfinished Business”

And this is Robocrook, Carmen Sandiego's sinister silicon servant.

(singing) Robocrook

His last known whereabouts: Vancouver, British Columbia. Vancouver's Stanley Park Cannon has been in place for 98 years, and every day at 9:00pm, it goes boom. (explosion) The tradition goes back to the turn of the century when the gun was used to tell fishermen it was time to bring their boats in. (explosion) Vancouver has grown a lot since then, but the 9 O'Clock gun still fires. Every morning, a city worker packs it with powder, and every night, an electric fuse wired to a clock sets it off. (explosion) Or it did until today when Robocrook subbed into Stanley Park. He scoped out the cannon, uncaged it, and carried it off. Gumshoes, you got to rope Robocrook and solve today's case...

(singing) Woo-woo-ooo-oo

...THE BIG BOOM BUST!