A young mother is recuperating in a San Francisco hospital when she is suddenly gasping for breath. The call button fails to bring help in t ime. The hospital's doctors, some of the best in the nation, are compl etely mystified by her death. How did this happen? APOCALYPSE NEARS.Th is is not the first such case at the hospital. Just as patients are ab out to be released with a clean bill of health, their conditions take a devastating turn for the worse. Accompanied by the newest member of the Women's Murder Club, Yuki Castellano, Lieutenant Lindsay Boxer pro bes deeper into the incidents. Could these cases just be appalling coi ncidences? Or is a maniac playing God with people's lives? When someon e close to the Women's Murder Club begins to exhibit the same frighten ing symptoms, Lindsay fears no one is safe.