Murder -- Fiction. Suspense fiction.

Serial murder investigation -- England -- Cumbria -- Fiction. Serial murderers -- Fiction. Cumbria (England) -- Fiction. Poe, Washington (Fictitious character) -- Fiction. Bradshaw, Tilly (Fictitious character) -- Fiction.

Policewomen -- New York (State) -- New York -- Fiction. Serial murder investigation -- Fiction. Murder -- Investigation -- Fiction. Hostages -- Fiction. New York (N.Y.) -- Fiction.

Private schools -- England -- Yorkshire -- Fiction. Women teachers -- England -- Yorkshire -- Fiction. Students -- England -- Yorkshire -- Fiction. Ambition -- Fiction. Secrecy -- Fiction.

Psychologists -- Fiction. Police -- Fiction. Murder -- Investigation -- Fiction. Los Angeles (Calif.) -- Fiction. Delaware, Alex (Fictitious character) -- Fiction.

Murder -- Fiction. Anonymous letters -- Fiction. Postal service -- Fiction. United States. Federal Bureau of Investigation -- Officialsand employees -- Fiction.

Game wardens -- Fiction. Falconers -- Fiction. Library directors -- Fiction. Photograph albums -- Fiction. Murder -- Investigation -- Fiction.

Hotel cleaning personnel -- Fiction. Murder -- Investigation -- Fiction. Hotels -- Fiction.

Murder -- Fiction. Models (Persons) -- Fiction. Heiresses -- Fiction.

Private schools -- England -- Yorkshire -- Fiction. Women teachers -- England -- Yorkshire -- Fiction. Students -- England -- Yorkshire -- Fiction. Ambition -- Fiction. Secrecy -- Fiction.

Serial murder investigation -- Fiction. Secrecy -- Fiction. City and town life -- Fiction. Linden (N.J.) -- Fiction.

Families -- Fiction. Witnesses -- Protection -- Fiction. Bereavement -- Fiction. Murder -- Fiction. Drug traffic -- Fiction.