Using clues from The Tale of Pebbles - an excerpt of an ode by Pindar with Janet's additional instructions - Agnes journeys to each of the four sites of the Panhellenic games to seek more information about the location of the artifact. Accompanying her on her quest is Nick McLean, a vacationing Grecophile who has recently lost his wife, and Alex Rigopoulos, a Greek-American university student. The killer is not far behind and has encounters with the trio and others during their trip. Excerpts from Janet's diary over a fifty-year span add a complementary storyline. The mystery ends when Agnes realizes what Janet knew all along - the heart offers solutions that reason alone may not.