Marquise Serenity has worked at the Passiflora for many years, persevering with her job even after most of her friends had left to pursue other ventures. She recounted once meeting Geralt of Rivia and Dandelion when they arrived at the brothel with two halflings.
In 1272, she had provided room and board at the Passiflora to Sigismund Dijkstra and his associates as they were plotting to assassinate King Radovid V. The madame settled Dijkstra on the top floor in one of the brothel's best suites, which was up a staircase hidden behind a secret door.
- If beaten at gwent, she gives Geralt the 10-strength Morvran Voorhis card from the Nilfgaardian deck, and recommends Sigi Reuven as the next opponent.
- Certain dialogue options reveal that she is one of the few women in the Witcher's World to have served in an official capacity in a nation's military, with another example being Ves.