Backdoor
To dream of going out a backdoor represents confronting problems that you don't want to think about. You may be facing a negative situation that is unpleasant to notice.
To dream of coming in the back door represents a conclusion to a problem or negative situation. You have finally decided to do something about a problem. If you see a criminal or person you have negative feelings about walking in a backdoor it may reflect fear or embarrassment that is becoming common place for you.
To dream of hearing knocking on the backdoor represents a conclusion to a problem or negative situation that you don't want to think about. A problem may be forcing you to deal with it.
*Please See Door