As soon as he left, I shimmied into black skinny jeans, changed into a black wig, cut short in the back and a sharp angle pointing to my chin, I layered on thick eyeliner, and popped in contacts that made my eyes gray. I smeared cherry red lipstick on and kissed the mirror.

“Time to work,” I said to my smiling self. I loved this part of my life. Slinking around after dark, staking out houses, watching the nefarious going-ons of others always gave me a thrill. I thought of myself as a fe...