The licensed murderer

"Detective Vanessa" he called urgh can't he adapt to the name Nessa for heaven sake "yes sir" I said "well take a look at this file and pictures " he said pushing them to me.
I looked at the picture and was shocked to see dead bodies "something happened at #3 pollens drive , we found some dead bodies in the inn, everyone in there is dead except the receptionist who pretended to be dead " he said "hmm I see I replied "I want you handle the case alongside your new assistant Ezekiel Montero "he said as he looked straight into my eyes " a new assistant?" I yelled

Vanessa is a young detective who works for the FBI, she is recently given a case to handle.
People are dying daily and the killer is yet to be known .
Finding clues are hard ,no blood spill, no finger print , no bullet holes all that is found is dead bodies with a weird bite mark.
A lot of plot twist are to be expected. A lot of secrets yet to be revealed.