This Man Dawson (1959, syndicated). Another Ziv entry, with Keith Andes as a formed Marine who runs a big city police force.

Human Predator
Act of Intimidation
Hired to Kill a Cop
Bad Cop
Three Times
Safe Haven
One by One
Crime Commission
Fear
Loose Cannon
Out on a Ledge
Crooked Private Eye
Thief of the City
Brother
Accessory to Murder
Doubt of Evidence
Plague
Bomber
Eyewitness
Informer
Charity
Bank Robbers
Arson Ring
One Last Friend
Brother's REvenge
Misfit
Fight Game
Juvenile Delinquent
Last of the Bad Boys
Get Dawson