“Gunsmoke” and “Lassie!”

are the only shows ahead of “NCIS” on the list of long-running CBS series (viaOutsider).

“Gunsmoke” racked up 20 seasons, while “Lassie!”

Emily Wickersham smiling

ended at Season 19.

However, the show is losing a bit of steam.

With his absence, many fans fear the show will not live on.

Katrina Law smiling

However, it was just a ploy to go on an undercover assignment.

Her message to her fans read, “Hangin this hat and jacket up.

What a great ride it’s been.

This cast, this crew, are top notch.

This business is finicky and weird and consistency is a rarity.

A moment in time I surely won’t forget.”

So, who is going to replace her on the show?

Her name is Agent Jessica Knight, played by actress Katrina Law (viaDistractify).