Holloway Prison was built in 1852 in what was then a desirable suburb, and because the neighbours objected the architects had to design something that would improve the amenities not spoil them. So, they made it look like a medieval castle. But now they're pulling down Holloway and, on the same site, they're going to build a new prison costing £6,000,000. What will this prison of the future be like? What must it be like? In the final programme of this two-part enquiry, Man Alive brings together those who designed the new prison and the women prisoners who appeared in last week's film.