Three Bright Pebbles, by Zenith Brown, Leslie Ford (epub/Kindle/pdf)

Hatred in the night...

There was little love in the Winthrop clan, not in the mother who ruthlessly dominated it, nor the son who disgraced it, nor the daughter who sullied its name.

Certainly it wasn't Cupid who one dark night sent an arrow rippling through a human throat...

And now the Winthrops had to desperately seek the murderer in their midst, before that minister of silent death could strike again...