Tennessee Smith, the owner of a gambling hall, is shot under mysterious circumstances. Dr, Baxter investigates, using the new tool of fingerprints to discover the guilty parties.
A woman tries to bring in her father's oil well. Mysterious attacks occur when others try to take over the well. Dr. Baxter and the sheriff work together to determine who is behind the plot but all are in for a big surprise.
Liz Lambert is vehemently opposed to her daughter Kathy's choice of a husband and creates unhappiness all around in her determination to stop the wedding.
Sheriff Quinn and his posse search for the man responsible for an express office hold-up, Dr. Bill Baxter tries to find the source of the diphtheria epidemic that's sweeping the valley. Bill soon realizes that he and the Sheriff are searching for the same man.—David Bassler