t-bird leaks in rain

i have a bad leak in my '92 t-bird. for some reason it leaks somewhere behind the parking brake and in another place above and behind the brake pedal when it rains. i cannot for the life of me pinpoint where exactly it's coming from. can anyone help cuz im allergic to mold and i dont want it in my car. thanks

One thing you can do to pinpoint it is get in the car, lay down under the dash, turn on your flashlight, and have a buddy hose the car down.