The first Philo Vance film. Originally released in 1929. It was produced as a silent film, and then converted to a sound film. Famously, Louise Brooks, who played "The Canary", refused to participate in the re-shoots and dubbing required to convert the film from silent to sound. This was later used by the studio as an excuse to effectively end her career. Margaret Livingston dubbed all The Canary's lines and served as a body double for reshoots as required.
Contemporary reviews basically held that it would have been a great silent film, and that it didn't work as a sound picture. I think they're wrong! It would have been a fine sound picture if they'd gotten Louise Brooks back in the studio, or just shot it as a sound picture from the beginning, but it suffers from some weak and awkward dubbing. (In fairness, it's no less watchable than any 60s Italian flick.)
It's good fun, and William Powell makes a better Philo Vance than Basil Rathbone (although neither really stands up to Basil's turn as Holmes.)
This film was followed up by The Greene Murder Case also starring Powell a little later in 1929. It was a Talkie from the start, and benefits strongly from that, so that's one to look forward to if you like your murder mysteries with a trans-Atlantic accent.