As soon as the cab pulled away from the curb, Karen turned towards Yvonne and started making out with her just like she had in the loo at the restaurant. Yvonne knew that the cab driver could see what they were doing in the rear view mirror, and rather suspected Karen of doing what she was doing in order to put on a show for him, but at the same time she was quite aroused at her burgeoning relationship with Karen being displayed in so public a manner.
The cab ride lasted about 20 minutes and deposited them in front of a luxurious looking block of flats. Looking somewhat disheveled, the two women made their way past the doorman, to whom Karen offered a perfunctory greeting, and into the lobby, which rose up the entire height of the building, atrium style. As they waited for the lift to arrive, Yvonne wondered briefly how many women the doorman had seen Karen escort into the building on other nights.
The lift itself was made of glass, looking down on the lobby below, and Karen punched the button for the 24th floor. Once they'd ascended past the 2nd floor Karen turned towards Yvonne once again, and Yvonne assumed they were about to resume making out. To her surprise, Karen instead reached behind her with her left hand and undid the zip to her dress by a couple of inches. With her right hand she reached for the front of Yvonne's dress, grasping the neckline between her breasts and yanking the dress down just enough to fully expose her bra, followed by pushing the bra down just enough to free Yvonne's tits from the cups and expose them. Karen reached into her trouser pocket to retrieve the panties she'd tucked in there earlier, and stuffed them in Yvonne's mouth. The whole thing, from expecting to be kissed to winding up on her knees in the lift with her tits hanging out and her panties in her mouth, had happened so suddenly that Yvonne barely had time to comprehend what had just taken place.
"You are about to enter my home," Karen said. "Those who come here as you do, do so not just to have sex with me, but also to submit to me. In this place you will address me as 'Mistress', and you will follow whatever instructions I give you without fail. Do you understand?"
"Yes Mistress," Yvonne replied, lowering her eyes and finding her arousal growing at Karen's abrupt switch into Domination.
"Tell me your safe-word," Karen continued.
"Tottenham Spurs."
Karen chuckled a bit at that, and continued. "Very well, when we reach my floor I'll lead the way, and you shall follow along behind me on your knees. As this is your first time here I won't blindfold you at all, but on some future visits you may spend most of the time with your eyes covered. Do you understand?"
"Yes Mistress."
The rest of the ride couldn't have taken more than a few minutes, though it seemed like forever to Yvonne. She knew that no one down in the lobby below could realistically see them, but the position she was in made her feel so slutty that her cunt was positively dripping. Finally the bell chimed and the door opened, and Karen exited the lift and proceeded down the hallway three doors to the left, with Yvonne following along behind on her knees.
Karen opened the door and flipped on the light switch, and Yvonne followed her into the flat, looking around and taking everything in. The furnishing was simple but tasteful and luxurious, and there were small indications of Karen's kinky lifestyle here and there that Yvonne was surprised to see displayed so openly. The coffee table, for example, seemed to be a thick sheet of glass laid on top of a wire cage-like structure, and on the wall to the left was a St Andrew's cross, something Yvonne had only seen in pictures previously. Karen pointed her towards the toilet, and indicated that she should take care of whatever ablutions she needed to in there, and to return to the front room wearing only her stockings, high heels and suspenders.
When she did so she found Karen had set out an ice bucket on an end table, and was placing some items in it that Yvonne couldn't quite make out. Also on the end table was something that looked like a rather large teacup, only with a closed bowl-shaped top and a spout in place of a handle. From another room she heard a low whistle, and Karen left to fetch it, returning a few moments later bearing an electric kettle. She picked up the odd teacup with one hand and tipped it up, pouring boiling water into the spout just to a level where the cup could be set down right side up again without any water spilling. She set it down on the end table again and squirted some oil from a plastic bottle into the dome shaped top, where the water from the section below would warm it. A pleasant and distinctive scent filled the room.
"Ginger," Karen said. "Whenever I take a new sub I like to establish a theme that's unique to them. Ginger will be yours. I'll be including it as an element in much of the play we do, and I have no doubt you'll very soon find that the slightest whiff of it will be enough to make you very, very aroused."
Karen led Yvonne over to the St Andrew's cross and helped her to her feet, binding her wrists and ankles to the corners with short lengths of rope. She then poured a small amount of oil from the warmer into the palm of her hand, anointing Yvonne with it, starting with her neck and shoulders and continuing down her back and her buttocks before moving to her arms, chest, abdomen, and the soft folds of her sex. Karen was humming a soft tune as she did so, and Yvonne savored the first touch of Karen's hand on every part of her body. She found the combination of the warm oil and the scent quite relaxing, and started to drift off into almost a doze when she was brought back to full alertness by the sudden sting of a flogger on her shoulder blades. She had no idea how long the flogging lasted, but the cadence was regular and Karen moved around her shoulder, her buttocks and the back of her thighs. Just as she was starting to adjust to the sting, and to expect and even crave the landing of the next blow, it stopped.
Karen left her alone for a short while, and Yvonne began to drift back into a somnolent state. This time she was brought back to awareness by the simultaneous touch of Karen's left hand on her hip and an electric wand style vibrator on her pussy, bringing her from near sleep to being on the verge of an orgasm in a matter of minutes.
"You like that? You want to cum?" Karen whispered in her ear.
"Yes please, Mistress," Yvonne whimpered.
"In this place orgasms require permission, at the risk of punishment."
"Please Mistress, may I cum?"