[Jack Stryker]

The whistle needs a little something else, before it'll function properly.  Something little enough to fit inside it.  Did you collect all the items from the chest?

Thanks. Missed something. but now that it's clean i blow it and nothing comes. what do i do now?

Okay, here's another hint.  Remember how you had to break something, in order to open the chest?  Well, there's something else inside the chest that you'll have to break, in order to fix the whistle.