Remember on the third floor of the Cinnabar Mansion (also known as the Pokemon House), there are no walls in a certain area where a scientist is located, before the stairs that takes you to the 2nd floor? There are two empty spaces. The left one will take you to the locked area where there's a set of stairs to take you to the basement. The right one will take you back to an empty room.
One of the house in d same row of mansion has back exit dat ll help
you just need to cast reducto on the lock. you get it during the 4th year
you go down to the front door and its the door behind the chair
Right before u go to the island prof. Krane will call u go and he will lead u to the basement in the lab the masterball will be there
Top right of cinnabar island.
leave through the southernmost exit in hearthome city
Look for it.... Everyone else did
4, i think...pretty sure.
the cinnabar key is in a poke ball that is in the Pokemon mansionin the last floor of cinnibar gym.
get the key
you walk through them XD
The secret key is in the Pokemon mansion (Cinnabar Island) in the basement.
Top right of cinnabar island.
go in the cinnabar mansion. lolderp
on cinnabar island
You will find it in the Pokemon mansion on cinnabar island.
you have to work your way through the Pokemon mansion and go out the right door while using the correct switches its and the very end of the Pokemon mansion
you have to find it inside the Pokemon mansion located on cinnabar island
on Cinnabar Island.Pokemon mansion is on cinnabar island if you don't know how to get there go to pallet town then go south surfing on one of your Pokemon and there your at cinnabar island.
Cinnabar island.
In Cinnabar island in the Mansion in Firered.