Help! Moisture in trunk...

I opened my trunk today (95 Civic EX copue) and everything is wet and moldy. It's not leaking, there isn't any puddles of water and nothing is soaked, just damp. There is condensation on the INSIDE panels on the trunk door. What should I do? I'm afraid that if it continues it will mess up my speakers in the back deck.

obviously if its wet then it is leaking...its either the trunk seal or the rear window seal....