It’s the telegram Constance never wanted to read:
DEEPLY REGRET TO INFORM YOU LT-CMDR H CLARKE LOST IN ACTION. CLASSIFIED OPERATIONS.
Those classified operations concerned a top-secret military project code-named ‘Quicksilver’. A project based in Vienna. A project with alien connections.
But bombed-out Vienna is not what it was before the war – with its Strauss music, its glamour and easy charm. It's not the time nor the place for a happy reunion. As Constance Clarke is about to discover...
And as the Doctor is about to discover, too!
Written By: Matt Fitton
Directed By: Jamie Anderson
Colin Baker (The Doctor), Miranda Raison (Constance Clarke), Lisa Greenwood (Flip Jackson), Matthew Cottle (Henry Clarke), Joel Fry (Kinvar/Rogers), Oliver Cotton (Major Callahan), Kate Kennedy (Ana), Robbie Stevens (Boyarov/Vilal General). Other parts portrayed by members of the cast.
Producer David Richardson
Script Editor Alan Barnes
Executive Producers Jason Haigh-Ellery and Nicholas Briggs