knight is here. demerey is here. >> you hear the toilets flushing. flushing contraband, marijuana, drugs, razor blades. anything they know that we're coming to find. >> they don't like to see us coming because we're thorough. >> our next target. we're going to ease over to delta dorm. we have a potential blood along with him, his roommate is roca moreno, alfredo iii. we'll get some documentation on him. document him, update him, photographs. >> today's targeted inmates are alfredo roca moreno, serving three life terms for murder, and bobby sandier, serving ten years for robbery with a deadly weapon. the cellmates are held in nearby shower cells while knight and demerey inspect their cell. >> sometimes we've been known to see these guys actually cut out a hole in the wall, cover it