Answer:
a forensic anthropologist
Explanation:
A forensic anthropologist is someone who studies skeletons. A forensic entomologist is someone who uses/finds bugs and maggots to study the crime scene. A forensic sociologist is someone who studies blood and finds out how it happened. And finally a forensic toxicologist is someone who studies body fluids and tissue samples and stuff to find out if drugs or chemicals are present in the body.