Documentary revealing the technological leaps forward that have enabled North Branch Correctional Institution in Maryland to become one of the most secure prisons in the world, holding over 1,400 of America's most dangerous prisoners.
The prison owes much of its innovation to the historic engineering breakthroughs at four earlier prisons - including the Tower of London and Alcatraz. Now, with its impenetrable cells able to withstand bomb blasts and technology ensuring dangerous inmates are kept safely away from each other, North Branch may be the toughest yet.
The ads are messing up, which makes it take long to watch the program. Demand 5 need to sort it out, it spoils the program views for those that want to catch up!
Comments (7)
10 months ago
animals_rule
ads are very annoying
10 months ago
Tracey
The ads are messing up, which makes it take long to watch the program. Demand 5 need to sort it out, it spoils the program views for those that want to catch up!
11 months ago
Andy
''Vicky am not happy there is no subtitled!!! I am deaf and would like watch it along with subtitled :('' Shame on you Channel5!!!
11 months ago
Kate
Great! I'm really glad it has been put on now! :)
11 months ago
Vicky
am not happy there is no subtitled!!! I am deaf and would like watch it along with subtitled :(
11 months ago
Manxie
Kate, it is now, I am watching it!
11 months ago
Kate
I really wanted to watch this online for help with my history work, as I missed it last night. Gutted it isn't on here.