Detective Amsel is a member of the Amsel family and likely also a member of The Order.
After Greg Benson's death, he approached Chris and Alex, while supposedly investigating the case. Although the two initially believed him to be credible, Daniel Shipman later discovered his family's connection with The Order, bringing the validity of his statements into doubt. Detective Amsel also investigated the case in which a child vanished from the Rainwood Memorial Elementary School in 2011, but claimed to be unable to discover any information about said disappearance. During the interview, The Detective said he worked for an organization that's based in Washington (although not giving anything more specific then that), leading to the possibility that he work's for The Organization.