Welcome to ZM's Secret Sound Investigation Report. Every day a new Case File will be disclosed with the latest evidence in ZM’s $50,000 Secret Sound!

Play at 7am, 8am, 12pm, 4pm & 5pm by listening to ZM.

You can also send your guess to Detective Soundkeeper Brooke through her direct hotline on the iHeartRadio Talkback function.

For clues and latest updates follow:

@zmsecretsound

@zmonline

& ZM Close Friends on Insta and Facebook!