The co-founders of a political research firm behind allegations about President Donald Trump's ties to Russia have a book coming out next month.

Random House announced Monday that 'Crime in Progress: Inside the Steele Dossier and the Fusion GPS Investigation of Donald Trump' will be published 26 November. 

The book was co-written by Fusion GPS founders Glenn Simpson and Peter Fritsch.

Random House is calling the book a 'never-before-told inside story.' It will be based around Trump and Russia and the investigation into whether his campaign colluded with them during the 2016 election. 

Simpson and Fritsch started investigating Trump's ties to Moscow in Summer 2015 through their Washington-based political investigations company. 

Fusion GPS helped compile the so-called Steele Dossier, by former British spy Christopher Steele, who in his findings contended that the Russian government held compromising information on Trump.