S2·E31 A Call on Kuprin: Part 2

Laye-Parker M.P. and Smith, a Lobby Correspondent, have reached Moscow in their search for Kuprin, a Soviet rocket expert whom they knew at Cambridge and whom they hope to persuade to return to England. Now Laye-Parker has been arrested by the M.V.D. on unspecified charges, and Smith, a reluctant partner in the enterprise, must carry on the search alone.