Darkness Duet Series 4 comments on Darkness Duet Series Pam September 26, 2013 at 7:44 pm (4 years ago) When is the second book To Edge of Darkness coming out?? Pam September 26, 2013 at 7:46 pm (4 years ago) I loved the first one! Brishawn November 2, 2013 at 2:44 pm (4 years ago) Just wondering when does The Grace of Darkness come out in paperback.?!?!?! melissa December 6, 2013 at 12:30 am (4 years ago) Hi! You can now order paperback prints under the Darkness Duet tab! Thank you!!