Venetia is, as usual, brilliant in her defense and Ashe is exonerated. Another pair of murders lead to a final showdown as tragic and brutal as it is surprising, leaving the Yard's top commander unable to prove a case against someone he knows is guilty. A Certain Justice is a coproduction of United Film and Television Productions and WGBH Boston. The screenplay is by Michael Russell, adapted from the novel by P. D. James.
Additional funding comes from public television viewers.