Broadcast: 20th January 1952

Starring: Ted Osborne, William Conrad, Betty Lou Gerson, Douglas Fairbanks Jnr, Lamont Johnson

Added: Jul 27 2012

Two eminent weapons designers were missing and plans for new anti-tank guns were taken out of the secret file. Alan Duval and Henry Blackmore were believed to have taken the weapon designs they had created and left the country and sold out to the enemy.