At the Eleusis excavation site, a security guard is found stabbed to death, in what looks at first like a botched theft of antiquities. But when a letter of confession arrives, the case takes a turn. Rather than stealing the statues, the thieves had replaced them with perfect copies, and now they are offering to do the same with the Parthenon frieze. The politicians are delighted, but Ferleki and Charitos will not let the dead guard rest in peace, and the case soon takes on an entirely new dimension.