When a London Underground Train makes an unscheduled stop at a disused station, Blake Langford realises that something is not quite right. As he follows the abandoned staircase up into a rundown building above the station, he discovers the body of a young girl. As Blake pursues the case, London's cruel streets provide little explanation of who the girl was or how she was killed until a surprise confession from his sister changes the case completely. When blood runs thicker than water, Blake is left with two women wanting answers and a brother in need of an alibi, but who can he trust?