I have to write an artical about the discovery of the ten Boom's safe house "de Beje" and the Jewish occupants within it (mention what happens to the occupants and the ten Boom family
Your question covers much of the book which I can't really summarize in this short answer forum. Check out the GradeSaver short summary below:
http://www.gradesaver.com/the-hiding-place/study-guide/summary
On February 28, 1944, this family was betrayed and the Gestapo (the Nazi secret police) raided their home. The Gestapo set a trap and waited throughout the day, seizing everyone who came to the house. By evening about 30 people had been taken into custody! Casper, Corrie and Betsie were all arrested. Corrie’s brother Willem, sister Nollie, and nephew Peter were at the house that day, and were also taken to prison.
Although the Gestapo systematically searched the house, they could not find what they sought most. They suspected Jews were in the house, but the Jews were safely hidden behind a false wall in Corrie’s bedroom. In this "hiding place" were two Jewish men, two Jewish women and two members of the Dutch underground. Although the house remained under guard, the Resistance was able to liberate the refugees 47 hours later. The six people had managed to stay quiet in their cramped, dark hiding place for all that time, even though they had no water and very little food. The four Jews were taken to new "safe houses," and three survived the war. One of the underground workers was killed during the war years, but the other survived.
