为了重燃婚姻的爱火，一对夫妻踏上一段徒步之旅，然而却在无情的荒野中遭遇无名枪手。为了生存，他们拼命奔逃。...

Unseen Enemy is an essential exploration of reasons 21st-century populations are experiencing a rash of diseases that were once only outbreaks, but have now become full-blown epidemics. This increased...