Journalist Ronan McGreevy joins The Last Word to discuss his new book 'Seán Lemass: The Lost Memoir', a biography that is largely based on 22 hours of recorded interviews with the former Taoiseach.

The memoir looks at Lemass' early life, including the shooting of his infant brother and his role in the War of Independence, as well as his time in politics from 1923 to 1966.

Catch the full chat with Ronan by pressing the 'Play' button on this page!