ATF Agent John Stone is a fictional character portrayed by Derek Webster in the TV series NCIS: Los Angeles.
In the first episode they appeared in, titled Between the Lines (season 5), they were 33 years old.
They appear in 1 episodes out of a total of 323 aired
Episodes1
Between the Lines
episode S5.E17 march 2014In LA a local gang torture and execute an ATF undercover agent, who worked with the US Navy on a joint task force; G and Sam find the body and a clue, which leads to a club, where the team solve the case, find a leak, and take care of it.