A.C. Rose orders Foyle to delegate his investigation of black marketing ring and personally look into the possibly seditious acts of a Socialist activist.

Anthony Howell, Corin Redgrave, David Alexander, David Westhead, Dugald Bruce-Lockhart, Elodie Kendall, Fergus O'Donnell, Geoffrey Freshwater, Matthew Flynn, Peter Capaldi, Peter-Hugo Daly, Samuel Oatley, Toni Palmer, Tony Turner, Valerie Edmond