The Lovecraft Invasion (audio story)

 was the two hundred and sixty fifth audio story in Big Finish's monthly range. It was written by Robert Valentine and featured Colin Baker as the Sixth Doctor, Lisa Greenwood as Flip Jackson and Miranda Raison as Constance Clarke.

Publisher's summary
The Doctor, Constance and Flip join forces with 51st-century bounty hunter, Calypso Jonze, to hunt down the Somnifax: a weaponised mind-parasite capable of turning its host's nightmares into physical reality. Chasing it through the time vortex to Providence, Rhode Island in 1937, they arrive too late to stop it from latching onto a local author of weird fiction... Howard Phillips Lovecraft.

With time running out before Lovecraft's monstrous pantheon breaks free and destroys the world, the Doctor must enter Lovecraft's mind to fight the psychic invader from within.

Can he and Flip overcome the eldritch horrors of the Cthulhu Mythos? And will Constance and Calypso survive babysitting the infamously xenophobic Old Gentleman of Providence himself?

Part One
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Part Two
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Part Three
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Part Four
to be added

Cast

 * The Doctor - Colin Baker
 * Flip Jackson - Lisa Greenwood
 * Constance Clarke - Miranda Raison
 * Calypso Jonze - Robyn Holdaway
 * Nyarlathotep / Cthulu - Jonathan Andrew Hume
 * Howard Phillips Lovecraft / Randolph Carter - Alan Marriott
 * Shoggoth / Wilbur / Armitage - David Menkin

Continuity
to be added