On 13 July 1942, the Franks were joined by the van Pels, made up of Hermann, Auguste, and 16-year-old Peter, and then in November by Fritz Pfeffer, a dentist and friend of the family.
Den 13. juli 1942, ankom familien van Pels til det hemmelige rum og bestod af: Hermann, Auguste og 16-årige Peter, og i november ankom Fritz Pfeffer, en tandlæge og ven af familien.