The Sixth Doctor is introduced to Mrs. Constance Clarke in our second September Main Range Release.

The Doctor Who Main Range brings you a new full-cast adventure every month, starring one of the original actors to play the Doctor on television! Featuring fantastic new creations or the best-loved monsters from the past of the series, these new stories are perfect for Doctor Who fans young and old.

Our 204th release Doctor Who: Criss-Cross begins a new era of adventures for Colin Baker’s Sixth Doctor. Working out of Bletchly Park in the middle of World War 2, the Doctor crosses paths with Leading Wren Constance Clarke, played by Miranda Raison.

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…

News Source: Big Finish