M&S will publish the lovable Conrad Black’s biography of Nixon. (Pot + kettle = black.)

For his upcoming biography of disgraced U.S. president Richard Nixon, Conrad Black is returning to the Canadian publisher that issued his first major biography 30 years ago. It’s also the same publisher with whom Black has had legal entanglements in his long career as businessman, newspaper publisher and author.

Yesterday Toronto-based McClelland & Stewart confirmed it has purchased, for an undisclosed amount, the Canadian rights to The Invincible Quest: The Life of Richard Milhous Nixon, a biography that Black, 62, has been working on for at least the last four years.

With an expected length of 800 pages, the book is to be published in hardcover simultaneously in Canada and Britain in May, with the U.S. edition due in the fall. Both the U.K. publisher, Quercus, and the American, PublicAffairs, published Black’s last biography, the 1,300-page Franklin Delano Roosevelt: Champion of Freedom, in 2003.

Of the expected 800 pages, approximately 650 will be redacted in the interest of US national security.