The main plot of this, the second episode of the series, has Melody Lee worried about a postcard from an old friend who asks for help. Melody Lee talks Rex into going with her to the old plantation house where her friend lives, and where they discover something strange is going on because the girl's father is keeping her from seeing anyone. Stuck there overnight because of a storm, Melody Lee sees what she thinks is the ghost of her friend's great grandfather, and Rex hears someone out on the plantation crying out at midnight.
They sort it all out to find it's no ghost, but the real captivating part of this story is the performance of Louise Beavers, a wonderful black actress who plays the part of the mother of an adult son who works at the plantation and who, it turns out, was the source of the crying out when he was murdered before he could tell Rex what was going on. Ms. Beavers was stunning in what was only a 2 minutes performance, but her grief and disbelief and agony were so real, so human, so beautiful portrayed that it blows me away every time I see it. One of the things I liked about this series - at least before all the black people were removed from the series in its second half - was that black people were portrayed with genuine humanity, as people with jobs and families and not just as caricatures like Amos and Andy of the 50s. This was 1959 and apparently could not be tolerated, so the show went lily white in its second half. It was much better in the first half.