Medical student Kate Deming isn't sure her marriage will survive till graduation. She hasn't seen her husband or daughters in days, and her reclusive sister has stopped answering her calls. The turf war between the gangs and the mafia has made this Chicago's deadliest winter on record, and every case that rolls into the emergency department is worse than the last. Kate recognizes the danger in her supervisor's smile, but she's so lonely she may just take him up on it anyway. When the CEO of the hospital dies in front of her, Kate reaches out to his widow. But the murdered man is not what he...