In spite of how unbelievable Roger’s story is, Mortimer and Eugene have no proof against him, showing how lies can gain traction. Although Gaffer is himself a morally ambiguous character, the moment where Mortimer and Eugene see Lizzie alone by the fire suggests that an innocent person could also be harmed by Roger’s lie. The fact that the Inspector takes Roger’s story at face value shows again how the justice system in London is flawed.