In the search for her brother, Boris Weisfeiler, Olga Weisfeiler traveled to Colonia Dignidad twice: in 2004 and 2007

“The boundaries of Colonia Dignidad are more extensive than had been previously thought… Thus, at the time of his disappearance, Weisfeiler was either on or very near to the Colonia property.”
- The U.S. declassified document (Eyes only) - April 10, 1985.

Accompanied by social workers and translators from Santiago, Olga traveled to Colonia together with three women from Parral whose close relatives had disappeared in Colonia Dignidad in the 1970s. They had never been allowed to enter Colonia grounds before.