Rian was a once girlfriend of John Rebus. She has "Bright red hair, cut short and pageboyish. Eyes deep, striking green. Lips thin but promising." At the start of Knots & Crosses she hosts a dinner party on the sunday, inviting John Rebus and two other of her friends, a bookseller and a lecturer. That night she sleeps with Rebus. However the relationship does not last and finishes soon after.