BestCrypt can create Hidden Containers that are not evident to an intruder. You can simply create another (hidden) container inside an already existing (shell) container. Data stored within shell and hidden containers can be completely different, passwords for the containers are also different, and it is impossible to tell whether a shell container is concealing a hidden container or not.
Idea of Hidden Containers and its first implementation was invented by our company in 2001, and appeared as so fruitful that now it has been more or less implemented in many other software.