It's April 2028. Youth gangs roam the streets of independent Edinburgh, forcing the ruling Council of City Guardians to seek advice. Experts from the utopian university-state of New Oxford recommend an extreme deterrent - a maximum security prison alongside the central tourist zone. But at the prison opening ceremony an Edinburgh guardian is shot. Quint gathers evidence linking New Oxford to the assassination. Sent there to close the case, he finds a ruthless administration beneath the glossy hi-tech veneer. And a conspiracy which leads from New Oxford's mysterious heart, the place known only as the House of Dust, to his home city. Quint Dalrymple's first investigation outside the former Scotland combines a taut and highly original thriller with pungent political comment.