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Welcome to the Guardian Longread, showcasing the best long-form journalism covering culture,

politics and new thinking. For the text version of this and all our long reads,

go to thegardian.com-forward-slash-vong-read.

The Queen of Crime Solving by Imogen Westnights, read by Lucy Scott and produced by Jessica Beck.

Early one morning in June 1982, a smartly dressed man was found hanging from scaffolding beneath

Blackfriars Bridge in central London. The dead man was carrying two Patek Philippe watches,

one on his wrist and one in his top jacket pocket, both of which had stopped.

The pockets and seams of his suit trousers contained five kilograms of bricks and rubble.

He was also carrying a forged Italian passport and about £10,000 in cash.

The next day, police in Rome confirmed the man's identity. His name was Roberto Calvi,

and he was the chair of an Italian bank with close ties to the Vatican.

Calvi had been missing for at least six days. He was due to appear in an Italian court the next

week to appear against a conviction for illegally transferring several billion lira out of the

country, the press called him God's Banker. Calvi's death was recorded as a suicide,

...