David Calder (Commander Nathan Spring / Box)
Trevor Cooper (Inspector Colin Devis)
Linda Newton (Chief Superintendent Pal Kenzy)
Rosa Coduri (Sophie)
Luke R Francis (Dara Phelan)
Norah Lopez Holden (Flora Díaz / Anarchist)
Lynsey Murrell (Inspector Alice Okoro)
Philip Olivier (Inspector Paul Bailey)
Leon Parris (Dr Luis Rivera / Anarchist)