My shadow can hear me

Dave Gallen is serving two life sentences. He was supposed to disappear in prison, but instead he becomes a threat. Mysterious symbols appear on the walls, solitary confinement is no longer safe, guards and psychologists begin to doubt - is he crazy or does he know exactly what he is doing? A dark psychothriller about power, isolation and the thin line between failure and strategy. Because sometimes the threat is not the silence, but the one who survives in it.