The Invincible Fifth

The Invincible Fifth

E E Cowper

In the fourth and final adventure, Crystal, Nicolette and Kitty find themselves at a loose end for the Christmas holidays until Barbara invites them to join her at Reculvers, her home beside the sea. They are quickly embroiled in a mystery which only adds to the excitement of the festive season.

The Crystal series reading order:

The Mystery Term
The Holiday School
The Fifth Form Adventurers
The Invincible Fifth

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