His bitchy little sister

His sister. It was too easy.

John's little sister Stephanie was a year and a half younger than him. John was a fresh twenty-one, making her a sweet little nineteen year old. Well, sweet in theory: in reality she was a total bitch. A beautiful ice queen, straight out of a teen movie. She was the queen-bee type, often surrounded by a small cadre of similarly sexy underlings.

Yes, Stephanie would make a perfect test subject.

Whenever they were both at home, she liked to bully him into fetching things for her, including drinks from the kitchen.

All he had to do was put a dose in one and hand it to her. She drank it without hesitation; she had no reason to be on any kind of guard at home.

John watched curiously as she took a few sizeable drinks from her glass, and then all at once she just went blank. Eyes empty, focused on nothing.

John grinned. Oh man, this was going to be fun.