Jeff is a fictional character portrayed by Andrew Lewis Caldwell in the TV series The Librarians.
In the first episode they appeared in, titled And Some Dude Named Jeff (season 4), they were 28 years old.
They appear in 1 episodes out of a total of 42 aired
Episodes1
And Some Dude Named Jeff
episode S4.E10 january 2018When Jenkins body-switches with a 28-year-old slacker named Jeff, he must find his way back into the Library to correct the mistake. But he will need a team to do it, and enlists the help of Jeff's hapless Dungeons and Dragons friends. Can they make it in time, before Jeff destroys the Library?