The doctor uses her as a party favor.

Kim's head was still spinning as she began to wake. She could feel the cold cavern air blow against her bare nipples hardening them. She felt her breasts swaying underneath her. She could feel the thick male member pushing deep between her pussy lips.

At first it felt incredible, her mind went to her husband and their frequent love sessions but something wasn't right. She could tell this cock wasn't his, it was foreign to her. She woke even more as she realized she had to resist what was happening.

Kim's vision cleared to catch a glimpse of her surroundings. She was face down on a large stone table, her ass was up in the air and her assailant was behind her using her body from behind. She tried pulling at her wrists to fight back but found she was immobile. Face down on her knees, her ankles had been shackled to the ends of the table spread and each wrist shackled to the near by ankle.

"This one is much tighter than your wife." The man behind her said. "and I believe she is starting to wake."

From the shadows Kim caught the Doctor step forward. She started to scream, to cry for her freedom but he quickly moved to place a mask over her mouth and nose.

"There, there, Mrs. Williams we can't have you spoiling my plans." He says as he pulled the strap tight around the back of Kim's head.

Immediately Kim's vision went fuzzy again and she felt a wave of pleasure and arousal wash over her. The thick member driving inside her felt amazing. She clenched her pussy around the cock as her pussy moistened in arousal. The first orgasm was **** from her body as the aerosol **** filled her lungs.

"Damn, Doc. What's in that stuff? This slut just came on my cock." The man said as his pace quickened fucking the bound brunette.

"Just something to prepare her body for what is to come." The doctor said watching Kim's eyes roll back in her head as she was obviously cumming again. "This little concoction will keep her aroused and ripe for my experiments."

The man using Kim pushed deep inside her and deposited a load of his cum. Kim opened her mouth and moaned deeply into the gas mask covering her mouth and nose. More of the mysterious gas filled her lungs as she closed her eyes again feeling the man withdraw from her wet lips. She felt herself passing out again but her vision caught a woman restrained to the wall and heavily pregnant. It was the last image she saw as her eyes closed shut.

"Well I better get back to the party." The man said slipping off the table and pulling back up his pants. "She gonna be available later?" He asked buttoning his police officer's uniform.

"Of course Chief Wilson." The doctor said patting the man on the shoulder. "I'll be using her for my favorite guests all night as the party favor. Send the mayor down next. He would be welcome to have a go with her."