Upon finding out about Mary Alice having "stolen" Deirdre Taylor's baby boy, Martha Huber sent a blackmail note, bluntly saying "I KNOW WHAT YOU DID. IT MAKES ME SICK. I'M GOING TO TELL". Martha was hoping to use this note to blackmail money out of Mary Alice, but Mary Alice instead shot herself. The letter stayed hidden in her cupboard. When Bree, Gabrielle, Susan and Lynette helped Paul clean out some of Mary Alice's belongings, they came across the letter. Gabrielle opened it, despite Bree telling her not too. They read it and then knew Mary Alice had a dark secret.