Tod Sullivan (writer), Rab Hamilton (artist)
Released 08/21/1965 - 10/30/1965
Printed in TV Century 21, #31-#41 (11 issues with 1 page in each) - The Solar Organization For Revenge And Murder (S.O.F.R.A.M.) steals the plans for the new XL rocket ships. Can Secret Agent 21 find their HQ to get the plans back and will Tina be a help?
Here are the pages I have of it.