Secret Life Of A Hogwarts Spy

Me, Nathalie Elsher, 20 year old, Hogwarts Professor......Turned rapidly into a spy? My colleagues are already suspicious.....Protecting the legend, Harry Potter is supposed to be my job. But Albus warns me that there is someone else, committed to doing the task at hand. Who was it? Why did he or she want to do it? Did Albus force them to? Did they willingly accept? Little did I know, that all those questions would be answered by meeting a certain dark haired professor....