Castle Haunt help

[Dko]

Can anyone help me with what I have to do next? I've just beaten the 2nd dungeon or what ever you call it and have these items. It would be greatly appreciated.
-Magic Boomerang
-Hook shot
-Red Candle(wand)
-Bait
-Bombs
-ladder
-Shield upgrade

[elise]

Is it castle Haunt 1 ?
if you enter level 3 walkthrough the wall right infront of you to get the whistle ;)

[Dko]

I would never thought of that >.< Thanks ^^