Tanja Morgenstein, daughter of a wealthy industrialist and a geochemist, is dead from exposure to Titan's lethal, chilled atmosphere, and Guerline Scarfe must determine why. This novella blends hard-SF extrapolation with elements of contemporary crime fiction, to envisage a future human society in a hostile environment, in which a young woman's worst enemies may be those around her. 'Matters Arising' won the 2018 Sir Julius Vogel Award for Best Novella or Novelette, and was shortlisted in the analogous category in both the Aurealis and Ditmar Awards.