Each letter in an original sentence has been replaced by another letter, creating a coded message. Word position, spaces and punctuation remain the same, and a letter in the code always represents the same letter. For instance, if K in the code represents A, K is always A.
So, you look at the statement and use clues, such as the same two letter next to each other (probably LL or TT) or a word alone (probably A or I), to figure out the replaced letters to break the code and read the message. For instance, a hint for the example below is K=A and E=S.
RLCE CE KQ FPKUXJF.
The answer is: This is an example.
Tune in tomorrow for the message