Occasionally, watching this comedy mystery, you'll think, "I think that was supposed to be funny," as the dialogue between Saoirse Ronan's police officer and Sam Rockwell's inspector - clearly meant to crackle and zing - falls and clangs like a dropped murder weapon, which is a shame because setting a murder mystery around the staging in London of Agatha Christie's The Mousetrap is interesting, especially given in the very beginning of the play's record-length run Richard Attenborough played the role of Sergeant Trotter and the grisly real-life case of the Rillington Place serial murders were being investigated, both details that feature in the clever historical context of this otherwise laugh-free, leaden, and, for a long middle stretch, chaotic film.
★★☆☆☆ (almost one star)
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