Trivia / The Sarah Jane Adventures S 3 E 7 E 8 The Eternity Trap

• Hey, It's That Place!: The Haunted House in the episode was previously used in "Forest of the Dead".
• Serendipity Writes the Plot: Phil Ford had initially hoped to be able to write his script for a specific filming location, but unfortunately this did not prove possible. Consequently, changes had to be made once the main location was finally identified as Dyffryn Gardens. Located in St Nicholas, the estate was much newer than the Civil War-era Ashen Hill Manor of the script. In fact, it had been constructed in the late nineteenth century by shipping and coal magnate John Cory, and was now operated by the National Trust and chiefly known for its botanical gardens. Because the property was landlocked, Ford relocated action originally set in a boathouse to a pavilion. He also dropped the notion of a gate-like structure at the foot of the main staircase which would have played a role in the defeat of Erasmus Darkening, instead taking advantage of the presence of the large, ornate crest of the Cory family.
• What Could Have Been: This was initially going to be a Sarah Jane-lite episode, but it got pushed forward in the schedule.

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