Prison Break

Nadine Velazquez played Maricruz Delgado in the pilot but was unable to appear in the series as she had signed on to appear in Me llamo Earl (2005) before the show was commissioned. She was replaced by Camille Guaty.

Stacy Keach (the Prison Warden) spent six months in a British prison and modeled his character after the man in charge at that institution.

It took 4.5 hours to apply the tattoo to Wentworth Miller on set.