Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Well done procedural, gets better across the two series

Can't disagree more with the other reviewer. They should have stuck it out through series one and two, because it becomes clear that the title Without Motive is an irony. The killer may seem without motive, but the people involved with the case, the detectives, the spouses, children, bosses, all have motives for their behaviors, all leading them to actions that are self-destructive, and harmful to the case and others. Some great watching, as the chaos piles up around the detectives, and you're not sure if they'll ever dig themselves out.Also some great acting to be found here, especially from Kenneth Cranham as DCS Henderson. Worth the watch, but if you settle into it, stick it out for both seasons.