"We continued to walk until we came to a crossroads. Standing in the middle of it was, though I didn't know it then, Dr. Mengele, the notorious Dr. Mengele" (Wiesel 20).
Allusions: As a reader, you either need to know or do some research to find out that Dr. Mengele is infamous for his inhumane medical research on twins in the Auschwitz concentration camp. Making an allusion to Dr. Mengele adds to the reader's understanding of what a horrific place to which Eliezer and his family have been brought.