Urgent cipher help needed!
Hello folks,
The local serial killer has abducted my family. They have expressed that they have a deep interest in ciphers, and so in giving me a hint as to their whereabouts, he has given the following mysterious code:
XDR
The killer has offered but one clue:
MN => NO
Can someone help me urgently? I need the answer as soon as possible or they are going to kidnap me too. Thanks in advance!