Caroline Mabry is a police officer working the weekend late shift, a place reserved for burn-outs, department drunks and those approaching retirement. Submerged in loneliness and still fighting the demons from her own past, the last thing se needs is a derelict coming into her station and telling her he wants to confess a murder. Then comes the realsation that Caroline has seen hid face before. Ninteen hours later, with the derelict still feverishly writing his confession, Caroline finds herself scrambling to investigate his long, progressively darker and more sinister tale.