It is a hot summer day where the air is so sweltering that it feels like you could take a deep breath and drown in the humidity. The ice cream man hands out half melted popsicles. Old people wobble by draped in a shawl of sweat. Even dogs sit in the shade refusing to chase cats. You feel a hot wind on your head, and are just dripping with ooze. But waitaminnit – is that from the heat of the day? Or can something more sinister be the cause of this new discomfort?