of Illinois, "Level 1" is the highest, while levels 6-8 have the lowest level of security in terms of federal prisons. However, it is more likely for the Fox River State Penitentiary be of a higher security level; this is because high security prisons in the USA are described as having, "highly-secured perimeters (featuring walls or reinforced fences), multiple- and single-occupant cell housing, the highest staff-to-inmate ratio, and close control of inmate movement", (features found in Fox River State Penitentiary), whilst low security prisons are described as having, "dormitory housing, a relatively low staff-to-inmate ratio, and limited or no perimeter fencing". Cast notes In the first part of the episode, Marshall Allman (L. J. Burrows) does not make an appearance. Robert Knepper (T-Bag) returns after a two episode gap, in which his character recovers from his brutal beating in "Cell Test". The second part of this episode is the first episode in the series in which regular cast member Paul Adelstein (Agent Kellerman) does not appear. John Turk guests stars as Turk, the inmate ordered to kill Burrows. Also, making their first appearances are Matt DeCaro as CO Roy Geary, and John Heard as Frank Tancredi. Reception Reviewstream.com reviewed the second part of the episode as "an absolutely fantastic episode", calling it "really nerve wrecking [sic], romantic", praising Michael's role in risking his plan to save Dr. Tancredi, as well as the prediction that "things are going to get uglier from now on, and their plan would not work". They also called the second part, "one of the best writing in television so far". Both the second, and first parts were rated 10 out of 10. As far as US ratings go, the two episodes performed better than the previous two. The first part was given a rating of 3.0, and viewing figures of 8.55 million. The second part was given a greater increase, with a rating of 3.4 and figures of 9.48 million viewers. Both episodes were the ranked the 43rd and 39th most watched show on American television for the two weeks. In the UK, the first part was given total figures of 2.04 million viewers, and the second part achieved a total of 2.15 million viewers, an increase from the first part. Both episodes were respectively ranked the 10th and 9th most viewed programme on Five for the two weeks. References External links Prison Break episodes 2005