This instalment was originally published in Look and Learn issue no. 686 on 8 March 1975.
The Elixir of Youth (continued . . .)
This installment was originally published in Look and Learn issue no. 651 on 6 July 1974.
The Prisoner of Zerss (continued . . .)
This installment was originally published in Look and Learn issue no. 522 on 15 January 1972.
