Rab Hamilton (artist), Tod Sullivan (writer)
Released 08/21/1965 - 10/30/1965
Printed in TV Century 21, #31-#41 (11 issues with 1 page in each)S.O.F.R.A.M. steals the plans for the new XL rocket ships. Secret Agent 21 and Tina must retrieve them.
Here are the pages I have of it.