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When the children find out that in Constance's time they are killing seals for their oil they are more than a little angry because the result is there is none left in their time. A seal trapper gets more than he wants when Aunt Lily decides that she has to have him, and the children try and persuade him to stop killing seals. When a sick pup turns up, Mandy believes the only way to save it is by taking it through the mirror.
Other episodes for this season