Judging by some of the plays ("Twelve Angry Men", "Donovan's Brain" and "The Out-of-Towners") and playwrights (Sumner Locke Elliot, Pamela Frankau and Dashiell Hammett) - the series bought some of the finest plays to the small screen.
Also considering that most television shows then were filmed before a live studio audience I thought it was really well done. The wonderful Wynne Gibson, a character actress from the 30s, who specialised in tough roles was in it and I thought the young girl looked like Susan Strasberg, but her name wasn't in the cast.
The plot was pretty intricate and involved. A man was bringing his young daughter to a hotel in a town for a reconciliation with his wife, who he hasn't seen for many years. On the train he meets the sheriff's daughter and they stop off at her dad's office on the way to the hotel. At the sheriff's office there is a wanted picture of the father - he has been accused of killing his wife. Of course he protests his innocence but they hold him overnight while they make inquiries. The morning comes and he is dead. Did he kill himself - or was it murder????
Based on a Dashiell Hammett story - so you know it is going to be good. All the actors perform well - the little girl has a particularly emotional scene. I won't tell the end but it was not often (in the late 40s) that you saw a member of this profession as a leader of a gang of crooks.