Challenge of the Piper (comic story)

Summary
The TARDIS lands in the strange magical land of the Pied Piper of Hamelin where the Hamelin children are still prevented from returning to their parents. After making a treacherous journey to the Piper's castle the Doctor is set three challenges which, if he passes, the Piper will allow the Hamelin children to return home

Characters
to be added

Continuity
to be added