He didn't have them in the naked torture scene from Season Two (or was it Three?).
But they showed in the beginning eps when he rejoind CTU. It was the shaving/haircutting scene. Made no sense at all.
At that time, he only had the tats on his upper arms.
He didn't have them in the naked torture scene from Season Two (or was it Three?).
The tattoo on his left forearm was part of the plot from Season 3. Between the second and third seasons (a 3 year gap) Jack went undercover and infiltrated a Mexican drug cartel. All the members of the cartel had that same tattoo--a "brotherhood" thing.
I don't know if that particular tattoo is real or if it's a fake and Keifer is staying in character for the photo.