Gasp! A student has died! And he appears to have been murdered! What a mystery!
It's not a very urgent mystery, mind you, as the course of events proceeds with a blandly flat tone. Very few people here speak with any major emotion in their voice, and one of the actors given the most dialogue (Robert Warwick) drones on with a near-complete monotone. Charles Lamont's direction generally results in blithely casual pacing and execution of even those moments that should be the most lively; some dialogue is somewhat senselessly grandiose both as it is written and as it is delivered. One might say that 'A shot in the dark' comes across as the type of dime-a-dozen mystery rushed out in paperbacks by the boatload, adapted to film. It's not bad, but it certainly doesn't make any real impression, either - nor does it try to.
Actors act, lights shine, four walls build a set, cameras move (a little bit), secrets are uncovered, and so on and so on. Except as it specifically serves to advance the plot, the dialogue and scene writing is frankly unimpressive, and the performances don't make much of a mark. Most troublesome of all is that while all the elements are here that could theoretically form a complete and compelling story, the plot development as we see it comes across as specious and arbitrary to the point that it feels like Movie Magic more than judicious storytelling. Oh, who am I kidding: this is kind of dull.
If you want to watch a mystery movie, and in particular one that won't cost you much more than an hour, then this just may fit the bill. Just don't expect anything more than that genre label portends on a rudimentary level, because you're quite unlikely to get it. 'A shot in the dark' is alright if you come across it, but definitely don't go out of your way.