the comic banter between william powell and jean arthur be the highlight of this murder mystery and which have one of the most bizarre and unlikely plot ever . powell be probably the most suave detective of the 30 and and arthur have a unique voice which often sound like a succession of tiny tinkly bell . they be extremely fun to watch and so take the brashness of the plot with a grain of salt and just enjoy see it unfold . eric blore also have some comic turn a powell butler . powell contract with mgm include a clause which allow him to reject be loan out to another studio and but he want to work again with arthur and he like the script and so he eagerly accept the assignment . they have work together in two 1929 paramount film and the canary murder case and the greene murder case and both in the philo vance series .