To see a killer in your dream represents you or someone else that has the intention to end something. Beliefs, friendships, or situations that are being intentionally terminated.
Positively, a killer may reflect you or someone else that fully intends to put a stop to something. If the killer attacks bad people, the dream may represent purification and the healing process. You are standing up to negative thoughts or situations.
Negatively, a killer may reflect your fears or even other people that are purposely killing off good things in your life. Fearing serious losses or being overwhelmed by humiliating failure. Fearing being the biggest loser you know. Fear that a problem you have is impossible to overcome.
Example: A women dreamed of being chased by a killer. In waking life she was terrified of financial ruin and was doing everything to avoid it after being forced to change jobs and take a pay-cut.
*Please See Murder
*Please See Serial Killer