This one is a briskly-paced, battle-of-the-sexes comedy against a background of a murder mystery. Smart production and, notably, the direction of Alexander Hall have imbued a basically incredible plot [by Wilson Collison] with the tempo and animation necessary to make people either believe or forget to disbelieve.
Melvyn Douglas and Joan Blondell are man and wife. He professionally a detective; she an amateur ditto who gums up the works repeatedly. Plenty of slapstick in the Thin Man tradition. Laughs come pretty steadily. Many of these are cleverly planted as surprise twists.
Two leads have the only roles of consequence. Everything else and everybody else is a passing panorama for their antics and clashes as they crazily progress toward the solution of a not-very-obtuse mystery situation.