Keach also appeared as Sheriff Ben Mason in the 1957 episode "Last Chance" of the ABC/Warner Brothers Western television series, Colt .45.

[2] That same year, he was cast as Jed Hammer in the episode "Trail's End" of the ABC/WB Western series, Sugarfoot, starring Will Hutchins.

Carlson, a CONTROL scientist, was the inventor of such gadgets as an umbrella rifle (with a high-speed camera in the handle) and edible buttons—a parody of Q, who holds a similar position in the James Bond movies.

Keach eventually gave up the role of Carlson when one too many clients were unable to reach him, and he had to respond, "I've been working in the CONTROL labs.

Keach died of congestive heart failure at the age of 88 in Burbank, California,[5] and is buried at Forest Lawn Memorial Park.