Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
Geralt was only able to escape from Madman Lugos' prison thanks to the help of a mysterious old man called Simun Brambling. It was he who convinced the guard to let Geralt out, warning Geralt first that he would one day demand a favor in return. Geralt had managed to forget about the whole incident - but not Simun. The old man found Geralt and demanded he repay his debt.