Episode : 3Step BackO X LAlex replayed that moment over and over.They were on the roof, having a lovely dinner date. Lena had been laughing, her auburn hair whipping in the wind, cheeks pink with cold.He spun and over the edge he saw she was on the ground. Blood soaking through her white coat. She looked still, eyes wide open, lips parted, as if about to say something, a word caught in her throat forever. Then the silence. Her last breath was nothing but a sigh.Alex and Lena had moved into the apartment just a month ago. It was supposed