Questions are raised in the south of France when mortar refuses to set during Janet and Philip's ambitious turret project. At Chateau Lagorce, Anna and Edward hope to make the dream of their six-year-old son Charles a reality when they try to build a tree house on a grand scale. Plus, Ben and Billie's ballroom restoration project reaches the decoration stage - meaning Billie must face to her fear of heights to paint the ceiling. (thetvdb.com)