Take a look at the hints below for guidance!

    Clue 1

    The words are English, but each letter has been replaced with another.

    Clue 2

    Try focusing on short words. Try to find any places where the words ‘I’ or ‘a’ are used, or any abbreviations.

    Clue 3

    In Ben’s note (found in the part 1 envelope), he refers to “that ABC = ECD” thing.

    Clue 4

    Each consonant becomes the next one along, and each vowel becomes the next one along. When Ben said A=E, he might have been talking about A as a coded letter and E as the translation….or perhaps A is the translation, and E is the coded letter!!! Try applying this rule to one or two of the shorter words to see if you can start to create or identify some words in English.

    Clue 5 (spoiler alert)

    Here’s the decryption table:
    Coded Note Translation

    Answer

    Here’s the decrypted message:

    HAVE I MASTERED YOUR SECRET LANGUAGE YET, TRUDY? IF SO, WOULD YOU LIKE TO GET A DRINK AFTER WORK? YES OR NO?

    Looks O.K. to me, I can’t see any mistakes, you get an A+, Dr Herman. I only teach it to those I truly love and trust, so the fact I’ve taught it to you is a good sign! So, yes, Dave, a fizzy drink sounds very nice!