Investment funds boast triple-digit returns. Retail investors enthusiastically pile in. Then – surprise! – they turn out to be scams… and implode. The story that played out in Istanbul last week may be as old as the city’s Grand Bazaar. But what does it say about financial regulation in Turkey, and should foreign investors be concerned?

Host Rob Armstrong catches up with the FT’s Turkey correspondent, John Paul Rathbone. Plus, Rob shorts the 10-year US Treasury, while JP goes for a long swim in the Bosphorus.

For a free 30-day trial to the Unhedged newsletter go to: https://www.ft.com/unhedgedoffer. You can email Robert Armstrong and Katie Martin at [email protected].