Dalgliesh plot
January 1975. Inspector Dalgliesh is sent to Nightingale House Nursing School to investigate the death of Heather Pearce who has been poisoned. Dalgliesh thinks detergent was put in the milk. The next morning Nurse Dakers tries to flee, but she is caught. She confesses that she once stole ten pounds and that Pearce blackmailed her. Nurse Fallon, who is recovering from illness at the on-site hospital, first denies returning to Nightingale House the morning of Pearce's death, but later admits she did, to retrieve personal letters. That night, Fallon is found dead in her bed…