Missax 23 03 09 Aubree Valentine My Sister The ... -

She hesitated only a second before pushing the door open. Inside, the room was surprisingly modern. A bank of monitors glowed, casting soft blue light over a massive table littered with notebooks, pens, and a single, ornate key resting on a velvet cushion. The key was shaped like an M and an X fused together—exactly the emblem from the envelope.

Inside lay a brittle sheet of paper, inked in a careful hand: MissaX 23 03 09 Aubree Valentine My Sister The ...