In 1969, Jane Mixer, a first-year law student at the University of Michigan, posted a note on a student noticeboard to share a lift back to her hometown of Muskegon for spring break. She never made it: she was brutally murdered, her body found a few miles from campus the following day. The Red Parts is Maggie Nelson's singular account of her aunt Jane's death, and the trial that took place some 35 years afterward.