Don't miss the stunning fourth collection of the Ninth Doctor's all-new comics adventures with Rose Tyler and Captain Jack Harkness! Two staggering adventures see the Doctor and his companions facing psyche-shattering conspiracies and ancient secrets in equal measure! First, the Doctor goes undercover at a prisoner rehabilitation facility held within a collapsing singularity - a place where the scientists claim to be able to 'cure' murderers and psychopaths...