Ask Theresa and Beth what the hell is going on.

Something is up and you are going to get answers. You stomp angrily down the corridor, just as Beth rounds the corner, a sweet smile on her face. You are taken aback. The first thing you notice is her clothes; her summer dress rides low and you swear you can see the tops of her nipples. Her skin is exceptionally pale, but most concerning of all is the elongated canines which are all too apparent in her smile.
"Beth what the he-" You stop suddenly, you can't help it. Something about her glowing blue eyes...
"Oh 'Resa!" You hear her call out. "Our good friend Sarah has come by, isn't that nice." You here Theresa's foot steps down the corridor, but you feel unable to move. The woman appears, but once again she looks so wrong. Her blouse is buttoned under her large, perky bosoms, and her skimpy panties are the only thing she wars below the waist.
"Why hello Sarah." She says, baring an equally sharp smile. "How good of you to come by." Beth stalks forward, her swaying dress giving you a tantalising glimpse of her perfect vulva.
"Hang on now Beth." Theresa says, sliding up behind the younger woman intimately. "I have an idea." She confers with her partner quietly, you can't hear a word. They finish with a little laugh.
"Okay Sarah look here please." Beth says, her painfully bright eyes boring into you. You feel all your concerns, worries and desires fade away, only beautiful, powerful, strange Beth is left. She slides up to you and you quiver in pleasure at her touch upon your goosebumped flesh. But something yet niggles at the back of your brain.
"W-Wait." You say with some effort. Beth looks surprised.
"Whats wrong honey?" She says, genuine concern infecting her voice.
"Keira, Keira is over there." You look over Beth's shoulder (its hard to look away) towards the bin. Beth glances to Theresa, who raises an eyebrow. Carefully, Beth's arms wrapped comfortingly around you, the two of you watch as Theresa stalks slowly towards Keira's hiding spot. Suddenly she darts forward, a yelp from Keira signaling the success of her hunt.
"Nononono." You hear Keira whimper, but your gaze is already back on Beth.
"Well done honey! We were so distracted by your beautiful self that we didn't even know she was there. But now, thanks to you, she can join in the fun too." She kisses you playfully on the lips. Her mouth and tongue feel like delicious fire on yours.
"So, we are going to have a little fun okay! We're going to get grumpy old Bob out from his hiding spot, and you are going to do it." She carefully lifts up the sleeve of your blouse, and caresses your inner forearm with her long tongue.
"I'm going to make you like us, but the change will be slow. You are going to use that to trick Bob, let him take you inside, then get him!" She giggles with glee. Behind her you can already hear Keira moaning.
"Are you ready?" Beth asks. You look into her eyes, a lackadaisical smile spreading across you face. You nod. Beth screws her eyes shut with a smile, then bites into your arm unceremoniously. The bite is short, much shorter than you would have liked, and then Beth lets you go, quickly pulling your sleeve over the clean wound.
"Go on now! You can have him all to yourself too." You walk down the corridor towards the records storage, stumbling at first, but quickly gaining confidence as you move. It doesn't take long to reach the door. You make an effort to fall into the door in faux despair.
"Robert!" You hiss, trying to seem panicked and scared. Really you feel only exhilaration and arousal as the curse rides through your willing veins. "Let me in!" Robert's face appears at the window. "Sarah?" He says inanely. "Is that you? Sorry I-I can't, you might be one of them..."