Casanova's Escape

The survival of our organization, The Rombo Code, hangs by a thread... Our oldest member and leader, Mr. Rombo, has been found and captured by our enemies, The White Cube. Mr. Rombo was the guardian of one of the organization's most valuable secrets: The true account, written by none other than Giacomo Casanova himself, of his famous escape from the Los Plomos prison, where The Inquisition had imprisoned him for his "licentious" conduct. We do not know what secrets the famous document holds, but we do know that in 1768, in Bilbao, one of his lovers managed to hide it in-extremis before Casanova was again arrested. Three centuries passed, until a tenacious history professor, an expert in the mysteries of 18th-century Europe, discovered and stored the documents. That man is actually Mr. Rombo, who was captured today in his office... However, not all news is bad, we know that the documents were not seized during the assault. Before being arrested, Mr. Rombo created a complex encryption system so that only other members of The Rombo Code can find them. We know that someone has called the police who, according to our calculations, will show up in the office in 60 minutes. Your mission is to recover the documents and escape before that happens. And Mr. Rombo? Don't worry, that's another story.