Most critics like it, and nearly all of them like it for the same reason: Kaitlin Olson. The reviews agree the series is formulaic, a case-of-the-week procedural in the line of Castle and The Mentalist, and they agree it hardly matters, because Olson’s lead performance carries it. Several praise the balance she strikes between the character’s genius and her muddled life as a single mother. The British papers are the warmest, calling it slick, silly fun of a kind small-screen crime has been missing.
The reservations are about the premise rather than the star. The Hollywood Reporter is the outlier, finding the concept half-baked and Olson the one good reason to watch. Collider notes that the supporting cast is thinned out to make room for her. Otherwise the spread is narrow: the early American reviews find it adequate and comfortable, the later British ones find it a treat, and nobody dislikes it.