Hamburger Haven was a restaurant in the same city the Fearless Detective Agency is located.
History[]
Scooby-Doo & Scrappy-Doo (second series)[]
Season 3[]
The three members of the detective agency went to the Hamburger Haven restaurant undercover as hired workers after they found evidence of hamburger sauce where a bunch of gold coins were stolen, the same type used from the restaurant. They were later correct when they discovered the owner, along with his two henchmen Otto and Ivan, placing the coins in burger patties, which they would have stored away in boxes to later smuggle them out of town with a getaway airplane at the airport.