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A look behind the scenes of the stately home. The carnival has arrived at Longleat for summer and the team are working against the clock to get it open in time for the weekend. However, things aren't going to plan with the helter-skelter. Also, there's a trip down memory lane as Ceawlin Thynn, 8th Marquess of Bath, reminisces with his first boss, Nick, the water bailiff, at the Shearwater Lake.

In the historic Secret Garden, the team carefully manoeuvres a bronze sculpture by global rock star Ronnie Wood into prime position. There's a very special party for senior keeper Ian Turner to celebrate 50 years of his work at Longleat. Also, rookie keeper Molly is in at the deep end when she's given the opportunity to work with the tigers.

There are some unexpected visitors in Longleat garden, the cameras are primed to investigate which mammal has made more progress in the waterways in 12 months than humans have in 30. Dr James Ford visits the Tower of London on a mission from Lord and Lady Bath to find out why their ancestor and builder of Longleat House, Sir John Thynne, was nearly executed at the Tower of London not once, but twice.

By night, we join a bat conservation team and a group on a ghost tour.