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Audio - Criss-Cross
(Matt Fitton)

Bletchley Park. Britain's most secret weapon in the Second World War.

Inside draughty huts, the earliest computers clatter day and night, decoding enemy transmissions and revealing intelligence crucial to the country's defence. Leading WREN Mrs Constance Clarke directs her charges to provide vital assistance to the boffins stationed in the Manor House. But a recent arrival among the code-breakers, the mysterious Dr Smith, has attracted the attention of MI5's spycatchers...

Over in mainland Europe, Nazi agents are briefed, covert operations planned, and a German submarine embarks on a very secret mission.

As encrypted radio waves criss-cross the planet, unearthly forces stir. And when certain ciphers are cracked, something will emerge to threaten all humanity, regardless of allegiance...


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  • Featuring the Sixth Doctor and Constance Clarke
  • Number of Episodes: 4
  • Cover Length: 120 minutes
  • Episode Lengths: 1 = 29'05", 2 = 27'30", 3 = 29'37", 4 = 32'22"
  • Total Length: 118'34"
  • Also features 29 minutes of trailers, music and special behind-the-scenes interviews with the cast and producers.
  • Cover Illustration: Tom Webster
  • Recorded: TBC
  • Recording Location: Moat Studios
  • Released: September 2015
  • ISBN: 978-1-78178-547-8


Full Cast List:

The Doctor Colin Baker
Constance Clarke Miranda Raison
Robbie Flint/Cyril Paul Thornley
Major Harris/German Lieutenant Alistair Petrie
Dr Schwartzmann/Rider Hugh Fraser
Sylvia Wimpole/Waveform/Effy Charlotte Salt

Captain Unger/Dutch/British Captain/Chuadri

Robbie Stevens

The Production Team:

Writer Matt Fitton
Director Ken Bentley
Sound/Music Steve Foxon
Theme Music David Darlington
Script Editor Alan Barnes
Producer David Richardson
Executive Producers Nicholas Briggs and Jason Haigh-Ellery
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Big Finish Magazine - Vortex: Issue 79 (September 2015)

Audio - Big Finish Magazine - Vortex: Issue 79
Vortex: Issue 79
 Issue 79 of 'Vortex - The Big Finish Magazine' was also sent out to subscribers with this release.

  In this issue...

    1. Sneak Previews & Whispers – Doctor Who: Novel Adaptations

    2. Editorial - Kenny

    3. Article - Doctor Who: Colin Baker - The Joy of Six

    4. Article - The Wonderful Wizard of Oz - Oz-Some

    5. Article - Doctor Who: The Third Doctor Adventures - The Third Degree

    6. Article - Torchwood - Relighting Torchwood

    7. Article -
    Listen Again - The Wrong Doctors

    8. Vortex Mail

    9. Coming Up... Release Schedule – September 2015 - June 2016

Published By: Big Finish Productions Ltd
Managing Editor: Jason Haigh-Ellery
Editor: Kenny Smith
Executive Producer: Nicholas Briggs
Line Producer: David Richardson
Design: Mark Plastow
Published: September 2015
Page Count: 24


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