You can read Sarah A. Hoyt's short story called High Stakes on Darwin's Evolutions.
But you don’t stay alive very long by giving way to first impulses. Someone was unlocking my door. This meant they probably suspected something. The identity under which I’d come to Babylon was not that interesting. Unskilled, young – thanks to extensive cosmetic surgery – and with an assumed IQ in the high nineties. My coverup identity would mean nothing to them. This meant either that they’d suspected something – that I’d let my guard down somehow – or that the person opening my door had some other intention in mind.
Read the whole story at: High Stakes by Sarah A. Hoyt