The Eternity Trap

16 – *The Eternity Trap*
16 – The Eternity Trap
The Sarah Jane Adventures story
Cast
	Starring Elisabeth Sladen – Sarah Jane Smith; Clyde Langer; Anjli Mohindra – Rani Chandra;
	Others Floella Benjamin – Professor Rivers; Donald Sumpter – Erasmus Darkening; Callum Blue – Lord Marchwood; Adam Gillen – Toby Silverman; Amelia Clarkson – Elizabeth Marchwood; Rhys Gear – Joseph Marchwood; Tony Boncza – Mr Scriven;
Production
Directed by	Series 3
Running time	2 episodes, 25 minutes each
First broadcast	5 November 2009
Last broadcast	6 November 2009
Chronology
← Preceded by; The Wedding of Sarah Jane Smith	Followed by →; Mona Lisa's Revenge
	List of The Sarah Jane Adventures serials

The Eternity Trap is a two-part story of The Sarah Jane Adventures which was first broadcast on CBBC on 5 and 6 November 2009. It is the fourth serial of the third series. The story involves the scientific investigation of a haunted house.

Plot

In the 17th century, Lord Marchwood employed Erasmus Darkening, an alien trapped on Earth, to make gold out of base metals. Erasmus was secretly working on a transdimensional accelerator to create a portal to his own galaxy. While Marchwood's children spied on Erasmus, he used the accelerator to trap them between dimensions. Lord Marchwood confronted Erasmus and attacked the machine, causing it to malfunction. To maintain immortality, Erasmus used the energy from people he has trapped over the centuries with his technology.

In the present,

Clyde, and Rani

. A mysterious poltergeist-like entity begins manipulating objects, including writing the message "get out" on a mirror; this is Lord Marchwood trying to scare everyone off to avoid a similar fate. Erasmus uses the accelerator to take Professor Rivers, though she is yet to be fully absorbed by the manor.

Lord Marchwood slays a creature that came to the manor during one of Erasmus' unsuccessful experiments. Aided by Lord Marchwood's sword as a conductor, Sarah Jane comes up with a plan to stop Erasmus by turning him into electricity. Erasmus is destroyed and Professor Rivers is returned. Sarah Jane destroys Erasmus' machine with the

sonic lipstick

. While Erasmus' victims were assumed destroyed as well, Lord Marchwood and his children appear in the window of the manor.

Continuity

Mr Smith, K9, Sarah Jane's attic and Rani's parents, Haresh and Gita
, do not appear in this story.

Novelisation

novelisation of this episode by Trevor Baxendale under the title The Haunted House for school literacy programs in September 2010.^[2]

References

^ Pixley, Andrew; Spilsbury, Tom (13 July 2011). "Credits". Doctor Who Magazine Special Edition: The Sarah Jane Companion, Volume Two (Special Edition #28): 114.
^ "BC White B/2A Sarah Jane Adventures: Haunted House". pearsonschoolsandfecolleges.co.uk. Retrieved 8 February 2018.

External links

"The Eternity Trap" at
IMDb

The Haunted House title listing at the Internet Speculative Fiction Database

[SJACompanionVol2-1] Pixley, Andrew; Spilsbury, Tom (13 July 2011). "Credits". Doctor Who Magazine Special Edition: The Sarah Jane Companion, Volume Two (Special Edition #28): 114.

[2] "BC White B/2A Sarah Jane Adventures: Haunted House". pearsonschoolsandfecolleges.co.uk. Retrieved 8 February 2018.

[2]