How Did Otto Frank Go Into Hide?

Otto Frank had been working in the Netherlands, as you say, over eight years. He had loyal business associates that he worked with and loyal staff. When did Otto Frank realize that the family would have to now go into hiding? Well, basically, you can say that people leaving, let's take Jewish Germans, they'd had to leave. It's obviously, you have to leave Germany because there's much of a future there. So what can you do? You can try and migrate, you can move to another country and find safety there. A lot of people thought, well, that other country better be on the other side of the ocean, but that was always difficult. And