Geronimo Stilton Season 1 Episode 10 Blackrat's Treasure Episode Title:Blackrat's Treasure.Episode Description:Some say that Geronimo is on the brink of professional exhaustion, Ben and Trap invent a story to keep him away from his work. They pretend that a seafaring monster is sowing terror in the port of Sourisia. Geronimo intends to prove to his nephew and his cousin that such monsters do not exist. But Captain Ranois, a pirate without scruple, captures our heroes because he needs a crew to go in search of a missing treasure.