One of Our Spies Is Missing
E. Darrell Hallenbeck
Henry Slesar (story), Howard Rodman (teleplay)
Robert Vaugn as Napoleon Solo, David McCallum as Illya Kuryakin, Leo G. Carroll as Alexander Waverly, Yvonne Craig as Maude Waverly
Taken from Episodes 2-20 and 2-21, The Bridge of Lions Affair. While Solo goes in search of a missing scientist, last seen looking amazingly young for his 83 years, Kuryakin must find who is stealing a lot of cats in London. The two cases are part of THRUSH's plan for a youth formula.