I just started watching on DVD and in several episodes there seem to be untied loose ends at the conclusion.
For instance, in "Too Many Clients", it's never explained who, what, or why the super's daughter was killed.
And in "Before I Die", the killer shoots several people with a tommy gun from a passing car. Who was driving the car?
Is this casualness a regular thing in the series?
Well for "Too Many Clients" the super's daughter is killed because she tried to blackmail Mr. Aiken and he decided that instead he should just kill her cause she was a threat. Mr. Aiken was the client who "hired" Nero Wolfe, the president of Continental Plastics.
As for "Before I Die" I would assume that Shane was driving the car with the window down, however it just may have been something that they missed when filming.
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For the OP (on the off chance you are reading this 4 years later), this is hardly "casualness." I will grant you that in the first case, they do not come out and explicitly explain the motive for Maria Perez' murder; however, it is clear enough if you pay attention, that as Magickmorgaine says, she tried to blackmail Aiken. This is evidenced by the scene where Maria purposefully ditches her friends on their way to the theater (or whereever they are going) as well as the knowledge that she is a blackmailer. The viewer is left to put two and two together, and I will grant you that it may be asking a bit much from the casual viewer who does not want to have to put any brain power in whatsoever, but it's hardly casualness on the part of the writers.
As to the second part you mentioned, this is hardly casualness either. The hitman and his driver are never part of the core of the story; identifying them is hardly a loose end because they were never a crucial part of the case that Wolfe needed to solve. As far as the story is concerned, their identities and ultimate fates are entirely unimportant. As a note to others, however, neither the shooter nor the driver were Morton Schane. The proof of this is in the end credits, there are actor credits for both the hitman and the driver, neither of which are the actor who played Schane.
... neither the shooter nor the driver were Morton Schane. The proof of this is in the end credits, there are actor credits for both the hitman and the driver, neither of which are the actor who played Schane.