The Deptford Poisoning Cases were a series of notorious murder cases that occurred in 1889 in Deptford, United Kingdom. Investigators determined that at least three people were poisoned to death by Amelia Winters, possibly with the assistance of her daughter, Elizabeth Frost. The two women insured over twenty people, five of whom died in questionable circumstances. The victims included two young children who were relatives of Winters and Frost. Winters died before going to trial. Frost was convicted of forgery for falsifying insurance documents and sent to prison for seven years..