1961 syndicated series starring George Nader as insurance investigator, and Regis Toomey as his boss. Key feature is the car Shannon drives, fitted with all kinds of gadgets.
 

Delayed Delivery
Never Help a Lady
Embezzler's Daughter
Bonds of Friendship
Zendee Report (pilot)
Deadly Homecoming
Lady on the Rocks
Professional Widower
Legacy in G
Cold Trail
Jade Tortoise
Desert Crossroads
Dolphin and the Mermaid
Duke of the Valley
Gideon's Leap
Professional Widower
Saints and Sinners
Uneasy Debt
Medal
Larceny Inc.
Jingle Kid
Porcelain Egg
End of the Line
Iron Clad Alibi
Tarnish on the Badge
Sports Car Story
Hyatt Fund
King Leal Report