Shortly after the movie begins, you see a really awful guy create three different reasons for folks to murder him! First, he betrays a guy who visited him...though the guy (Nat Pendleton) overhears the plan and avoids being killed by mobsters. Second, a woman comes to tell him she's pregnant by him...and he responds that he doesn't care and he's already married....and the poor lady jumps out the window to her death. And, third, his wife hates him since he's such a weasel, but he refuses to grant her a divorce because he likes the arrangement because being married allows him to impregnate other women at will and not marry them since he's already married! Rarely have I seen a murder victim so quickly shown to be a complete jerk...and yes, he's soon murdered...but by whom?
The police think the brother of the dead woman did it...and they soon arrest him. Inexplicably, they also arrest a woman, as the guy they arrested was hiding in her apartment...even though they have no evidence she was involved...which she wasn't. This isn't surprising, as the film progresses, it's obvious the cops are among the dumbest I can recall in a B-movie. And, they also arrest a few other people (as well as a chimp!) while they're at it! It seems they want to arrest anyone who had a motive to kill the guy...and that includes a LOT of people! But there was only one bullet in the victim, so it's can't be like "Murder on the Orient Express".
Like so many B-mysteries of the 1930s-40s, the cops are not only idiots, but the case is ultimately solved by an amateur. In this case, Lois (Una Merkel) is the innocent arrested woman and she later investigates the crime herself. And, it turns out, she's the police commissioner's daughter!
So is it any good? Well, it's okay. Merkel is very good but as one other reviewer pointed out, Zasu Pitts is more a distraction and annoyance when she's in the film. Imagine a movie where Olive Oyl periodically makes an appearance and you'll understand about Pitts in the movie. Overall, I'd say this one is at best a chiched time-passer.