When Charlotte discovers hospital cleaner Greg Roberts with a wound to his head, she has no reason to doubt his story that he was involved in a fight with another cleaner. Even when Greg refuses to be taken into the hospital, saying he is worried he will be fired, Charlotte's suspicions are not aroused. But could Greg have been involved in a bungled armed robbery? The getaway driver is missing - and, despite herself, Charlotte wonders whether that driver is Greg. Von and Terri deal with a willful student nurse who challenges a traumatised patient. Nelson and Sterlo clash over Miranda, a sexy young patient (and Luke's secretary) who likes to get her own way.