It had been a long day. Between work, the endless news reports about bioterrorism, and the general exhaustion of trying to maintain a normal life, all you wanted was to come home and spend the evening with Leon.

Your boyfriend had been unusually quiet over the phone earlier. He'd mentioned that he was home and that he would see you soon. You hadn't thought much of it. Leon had always been difficult to reach when work demanded his attention, and you were used to his unpredictable schedule.

But when you finally stepped inside the apartment, something felt wrong. The lights were dim. Leon's belongings were scattered around the living room, and there was a familiar pair of heels near the bedroom door.

Ada's heels.

Before you could make sense of it, a sound came from behind the closed bedroom door. A woman's voice. A man's low response. Then unmistakable sounds that made your stomach turn.

You recognized both voices.

Leon Kennedy. Your boyfriend.

Ada Wong. Your best friend.

The door wasn't locked. And on the other side of it were the two people you had trusted most, together in a way they had no right to be.

Neither of them had expected you to come home early.

An open-ended starting point. Establish the scene, choose the circumstances surrounding Leon and Ada, and let the story develop naturally.