Tomasz Piątek was born in 1974 in Poland and studied linguistics in Milan. Between 1995 and 2013 he worked as a journalist for the Polish news magazine Polityka, the Italian daily La Stampa and as an expert in psycholinguistics. Since 2013 Piątek is the columnist of the second largest Polish daily newspaper Gazeta Wyborcza.
Beside his journalistic work, he is also known as an author of several novels, thrillers and fantasy books. With his nonfiction book Macierewicz i jego tajemnice (Macierewicz and his secrets) published in 2017, he got targeted by state organs in Poland: as in twelve columns published in the Gazeta Wyborcza, Piątek describes the connections of Antoni Macierewicz, Polish Minister of Defence, to the Russian President Vladimir Putin, the Russian intelligence service and criminal groups in Russia. On the one hand, these connections are piquant, since Macierewicz always appears as a determined opponent of Putin in the Polish public. On the other hand, Piątek accuses the minister of being involved in illegal arms and money transactions. Instead of filing a complaint against the journalist or initiating civil-law investigations, the minister intervened with the public prosecutor's office, which assigned the case to its military division. Piątek was accused of "insulting an official during his service and in connection with his work", threatened with a sentence of up to three years of imprisonment. After months of investigation, the public prosecutor's office has now closed the case.
Piątek himself assumes that he is monitored by Polish government at the latest since the publication of his book. For the organization "Reporters Without Borders" Piątek was the "Journalist of the Year 2017".