"As it turns out, a dead man can tell stories ... Murders are a dime a dozen in Margaret Thatcher's London, and when it comes to the brutal killing of a middle-aged alcoholic found dumped outside of town, Scotland Yard has more important cases to deal with. Instead it's a job for the Department of Unexplained Deaths and its head Detective Sergeant. With only a box of cassette-tape diaries as evidence the rogue detective has no choice but to listen...