Jack Sheffield is a fictional character portrayed by Robert Lipton in the TV series 21 Jump Street.
In the first episode they appeared in, titled In the Custody of a Clown (season 2), they were 43 years old.
They appear in 1 episodes out of a total of 102 aired
Episodes1
In the Custody of a Clown
episode S2.E1 september 1987Captain Fuller and the rest of the team investigate after a ninth grade student is kidnapped from school.