Your final suspect(s) for the killer and the accomplice

Killer : -

Everybody is a suspect so I can't guess it but I think it is 

Ena 

Accomplice:- 

Psychiatrist Hwang 

Captain yang (died in ep 9)

Choi San

Psychiatrist ms lee 

han saem--but he might not be killing people, it is guilt associated with a traumatic event in his younger years and this is all some sort therapy to help him come to terms with what happened.  a fire at the orphanage maybe.

heck i don't know at this point..everyone can be the killer but it's not the doctors. lol