This week on Playback. Lost lives and devastation in the M9 crash. The role of rave culture in the Peace Process. And secrets, lies and backstabbing - The Traitors is back. All on Playback presented by Sinéad Mooney. 

<p>This week on Playback. Lost lives and devastation in the M9 crash. The role of rave culture in the Peace Process. And secrets, lies and backstabbing - The Traitors is back. All on Playback presented by Sinéad Mooney.&nbsp;</p>

Sinéad Mooney brings you the best of the week's wireless - from the big news stories to the features, drama, documentaries, sport and music.