Answer :
Adolph hitler and other nazi's were informed of jew's living in an attic in the back of the office. The nazi's stormed into the attic and took everyone into custody. The families were split up. The only two people who got to stay together were ann and margot. Margot died of typhus and later on so did anne. Otto was the only member of the secret annexe who didn't die in the concentration camp. He went home and found out his whole amily was gone.
The Diary of Anne Frank stops abruptly following Anne's arrest. However, Otto Frank returned years later. Miep expected Anne to return home, so she saved her diary. However, when she realized Anne wouldn't be coming back, she gave it to Otto. Which, could be thought of as the resolution.
