London is a dark city in the middle of the night- these are the words of Iranian journalist Aliasghar who received a threat to life warning from the Met police. The police told him he was in immediate danger in the capital. In Paul Caruana Galizia's last series, Londongrad, he uncovered the extent of Russian money hidden in London. In season two he comes across another foreign power operating in the city and sets off to try to uncover who is behind the threats.

Episodes 1 + 2 are available for free. To get early access to the final two episodes of the series, and ad-free listening, subscribe to Tortoise+ on Apple podcasts or join Tortoise as a member, where you can access more of our reporting, live events and support our work. Just visit tortoisemedia.com/hitsquads for an exclusive offer of £60 a year.

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