WHEN D-BLOCK AIN'T ENOUGH 32 solitary cells weren't nearly enough to serve a prison full of first-degree murderers who were as violent on the inside as they had been on the outside. When D-Block maxed out, the most serious offenders were sent to a sectioned overflow space in B-Block. Life in solitary on B was similar to D, with one exception: a shared exercise cage. The entire prison went on lockdown as B-Block's solitary population walked out to exercise. Considering these were essentially D-Block status inmates, heading out for a few sit-ups was a death wish. Once, an inmate "spotting" a guy lifting weights pushed the bar into the man's chest - just as his friend shoved a shank into his side. Killers weren't the only convicts in solitary B; there were also "protective custody" inmates isolated for safety. Dubbed as "check-in" some were forced into protective isolation if death threats were made against them. Others, like convicted pedophiles, often requested it out of fear. Either way, "check-in" wasn't something to brag about.