百草堂在京城开设，杨天淳见识到区别于中医的西医。京城突然有人到处滥杀洋人，他们下一个目标就是英国大使，铁猴子几经波折发现凶手真面目竟然是自己的奶妈，杨天淳到底该如何抉择呢？。A remote helpline volunteer is targeted by a stranger who lures women from their homes with a recording of a crying baby.。