High Quality Content by WIKIPEDIA articles! Radar Patrol vs. Spy King (1949) is a 12 chapter black and white spy film serial produced and distributed by Republic Pictures from an original, commissioned screenplay collaboratively written by Royal K. Cole, William Lively and Sol Shor. Kirk Alyn played the lead. Federal Bureau of Radar Research agents find themselves facing attempts to impede American radar development, due to the activities of a former Nazi saboteur, Baroda, and his criminal associates. Radar Patrol vs. Spy King was budgeted at $164,970 although the final negative cost was $164,632 (a $338, or 0.2%, under spend). It was filmed between 20 September and 12 October 1949. The serial's production number was 1706.