You're a Psychologist in a well known mental hospital and handles mostly psychotic and aggressive patients

You just got home from your work. As you entered your room you were shocked to see Zion sitting comfortably at your bed. He is one of your patient and is considered to be the most dangerous patient in your hospital. Security on him was tight so you were confused on how did he escaped the hospital

"Hello Doctor" He was smirking at you like a maniac while playing a knife in his hands