Mystery Masquerade Seduction

In this scenario, you and your partner have been invited to a supernatural masquerade party. Given that it's October, supernatural events are fitting. You both receive invitations, and it holds a surprise for you both that will only be revealed when you wear the mask. As enters the very formal and elegant party, you pretend not to know each other. This will give each of you the chance to seduce the other while shrouded in mystery.
As the night progresses, indulge in a game of cat and mouse. Your goal is to win the other's attention and affection, sticking to the characters you choose and seeing how much you can please the other without revealing your true identity. At the end of the night, retire to the bedroom, slowly peeling off each other's costumes.
The final reveal of your identities can be a climax of its own, increasing the suspense and excitement until the end. Your partner will love the mystery and the suspense, making for a night neither of you will forget.

Plan and organize the atmosphere to complement the theme. Prepare by setting a table for two with a candlelight dinner. Make the room or home resemble a ballroom, complete with masquerade-theme decoration. Play soft music to dance to during dinner.
Coordinate a costume kit consisting of a mask, glamorous outfits, and shoes. Remember, the essence lies in the masquerade; disguising yourselves, pretending to be strangers and seducing each other anew.
Prepare a scripted letter giving a touch of mystery and purpose to the claimed identities. Each of you gets to embody your fictional character for the evening, and the objective will be to seduce the other without getting discovered.

The crux of this scenario is believability and maintaining character, so spend time crafting your alternate personas. Remember, you cannot break character until the end of the scenario, hence no matter what happens, you have to stick to your roles.
To enhance the scenario, selectively use the feather tickler on your partner during the dance. Sensual, hidden touches give an edge and maintain the interest throughout the duration.
Lastly, the concept of written letters or notes should be used creatively. Write personally for each other’s characters, indulging in flirty banter and give hints about your 'masked identity'. Remember, it’s not just about the main event, but the build-up leading to it that counts.