From The Missing Cryptoqueen team.

How mysterious friends in influential places may have helped Ruja stay one step ahead. A massive revelation we only now know, but which Ruja knew years earlier.

Who are they? And could they be helping her now?

CREDITS Presenter: Jamie Bartlett Producers: Rob Byrne and Georgia Catt Original music and sound design: Phil Channell Original music and vocals: Dessislava Stefanova and the London Bulgarian Choir Studio Engineer: Giles Aspen Series Editor: Philip Sellars Commissioner: Dylan Haskins The Missing Cryptoqueen is a BBC Documentaries production for BBC Sounds and BBC 5Live

The Missing Cryptoqueen is back with episode 11 on October 19th.

But in the meantime a taster of another podcast, Burn Wild. A story of two fugitive environmentalists, an eco-terrorist cell and a burning question: How far is too far to go to save the planet?

To hear more of Burn Wild, updated each Tuesday, search and subscribe: https://www.bbc.co.uk/sounds/brand/p0cx6tw7

The search for Dr Ruja Ignatova gathers pace, five years after she disappeared. Files leaked from Dubai reveal how Dr Ruja stashed millions in the emirate and struck up a relationship with a mysterious sheikh. Then, a careless selfie leads the podcast to a mansion in an exclusive gated community. As the FBI steps up its search, new information surfaces about Dr Ruja’s disappearance from an unlikely source.

Presenter: Jamie Bartlett Producers: Rob Byrne and Georgia Catt Series Producer: Georgia Catt Commissioner: Dylan Haskins Series Editor: Philip Sellars Original music and sound design: Phil Channell Original music and vocals: Dessislava Stefanova and the London Bulgarian Choir Featuring footage from: LiveNow from Fox, 5en News, Prag News, Welt Netzreporter The Missing Cryptoqueen is a BBC Documentaries production for BBC Sounds and BBC 5Live

The Missing Cryptoqueen is back with new episodes from 28 September.

The search for Dr Ruja is back on. A lot has happened since Episode 8.

Original music and sound design: Phil Channell Original Music and vocals: Dessislava Stefanova and the London Bulgarian Choir

This audio was updated on 12/08/2020 to reflect additional correspondence with Chelgate.

Coming soon...

The final episode takes an unexpected twist.

Presenter: Jamie Bartlett Producer: Georgia Catt Additional Research: Ignatius Bahizi Editor: Philip Sellars Original music and sound design: Phil Channell Original Music and vocals: Dessislava Stefanova and the London Bulgarian Choir

Could Dr Ruja and the missing billions be hidden in plain sight? A number of small leads seem to be pointing to one place.

Presenter: Jamie Bartlett Producer: Georgia Catt Editor: Philip Sellars Original music and sound design: Phil Channell Original Music and vocals: Dessislava Stefanova and the London Bulgarian Choir

Episode 7 of 8. Released weekly

Episode 7 will be available on Monday 28 October. We can't say too much, except this...

In 2009 Dr Ruja and her father bought a metallurgic factory in Southern Germany. What does this have to do with her disappearance today? Those who knew her at the time tell a strangely familiar story about the impressive businesswoman who came to save their workplace.

Presenter: Jamie Bartlett Producer: Georgia Catt Editor: Philip Sellars Original music and sound design: Phil Channell Original Music and vocals: Dessislava Stefanova and the London Bulgarian Choir

Episode 6 of 8. Released weekly.