I undressed and got in the bath, breathing a sigh of relief as the hot water soaked into my skin, releasing the knotted muscles and dissolving the dirt. As I lay back I noticed a headache I hadn't known I had, and, to my shock, saw blood swirling through the water. Confused, I reached up one hand to my head. Nothing. Slowly, dreading what I would discover, I moved my hand down to my neck, and, to my horror I felt two raised, ragged puncture marks, near the base of my throat.