The reviews are uniformly warm. Most critics single out James Nesbitt’s performance as the father, and several call it hard to watch and mean that as a compliment. The dual-timeline structure draws consistent approval for the way it lets the drama trace grief over years rather than weeks, and the consensus is that the series works as both an emotional drama and an investigation thriller, with the pain of the parents kept in front of the mystery rather than behind it.
The spread is narrow. Nobody dismisses it, and the reservations are about familiarity rather than failure. The AV Club finds it too close to other crime dramas of its kind and short on a personality of its own, and IndieWire agrees that it handles well-worn territory without rising above it. Both still think it worth an evening. The remaining critics regard it as unusually strong television and are untroubled by the comparisons.