When the Panama Papers were released in 2016, they thrust a spotlight on the tax affairs of the rich and powerful.
Some 18 months later, the so-called Paradise Papers have yet again brought the matter under global scrutiny - and feature high profile key players from much closer to home.
The Paradise Papers is a database comprising around 13.4 million documents detailing the tax affairs of some of the wealthiest people and companies on the planet.
The majority of the data comes from papers leaked by Appleby, a Bermuda-based law firm specialising in offshore accounts.
Nearly 100 media organisations were involved in sifting through the tranche of files, which were obtained by the German newspaper Suddeutsche Zeitung and shared with International Consortium of Investigative Journalists (ICIJ).
Their importance is underlined by the sheer profile of those included within them.
Much of the new trove of files includes bank statements, emails and loan agreements from Appleby, a firm which helps clients set up in overseas jurisdictions with low or zero tax rates.
Responding to the leak on Sunday, Appleby said there is "no evidence" that it has done anything wrong.
Other records came from Asiaciti Trust, a family-run offshore specialist based In Singapore, and from 19 corporate registries maintained by governments in jurisdictions that draw the wealthy seeking privacy.
International household names such as Nike and Apple feature prominently in the list, highlighted for their alleged use of aggressive tax avoidance schemes.
The ICIJ reported that Silicon Valley investor and Russian citizen Yuri Milner got 191 million US Dollars (£146m) from VTB Bank, and invested that money in Twitter.
The leaked records also show that a financial subsidiary of Russian energy company Gazprom - official partner of the Champions League - funded a shell company that invested in a Milner-affiliated company that held roughly 1 billion dollars in Facebook shares shortly before its 2012 initial public offering.
The papers also question whether Everton football club has broken Premier League rules over ownership.
But perhaps the biggest name to emerge from the list is the head of the British monarchy. According to reports, around £10m (€11.25m) from the Queen's private fund was paid into funds in the Cayman Islands and Bermuda between 2004 and 2005. A small part of the cash was traced to a lender which has previously been criticised for ripping off poor customers.
A spokesman for the estate said: "All of our investments are fully audited and legitimate."
Tax avoidance involves companies and people using legal ways and following the rules to reduce their tax bill.
In contrast, tax evasion is an offence and involves illegal ways of paying less tax than required.
The papers claim major global companies have exploited offshore schemes to avoid tax.
Much like the Panama Papers and to some extent the Expenses Scandal before it, revelations from the Paradise Papers are likely to dominate international news bulletins for days to come.
In addition to the initial cache of data released on Sunday night, the ICIJ has promised further information will be made public throughout the week.
The ICIJ said this will include "stories on strategies used by multinational corporations to shift profits to low-tax jurisdictions," and an expose on "the world of private jets and yachts" owned in offshore tax havens by the planet's richest people.