Sphere of Influence was the first story in the audio anthology Susan's War, produced by Big Finish Productions. It was written by Eddie Robson and featured Carole Ann Ford as Susan and William Russell as Ian Chesterton. This was the first appearance of the Sensorites in a Big Finish audio drama.

Publisher's summary[edit | edit source]

Susan’s first mission is one of diplomacy. The Sense-Sphere could prove a valuable ally to Gallifrey.

But she is not the only one who knows the Sensorites of old. Susan will have the support of an old friend.

Ian Chesterton is about to rejoin the adventure he left a lifetime ago!

Plot[edit | edit source]

to be added

Cast[edit | edit source]

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Continuity[edit | edit source]

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