Mari Gilbert (June 22, 1964 – July 23, 2016[1]) was an American activist and murder victim advocate.
The investigation of Shannan's disappearance led to the discovery of the remains of 10 homicide victims scattered along Ocean Parkway in New York.
An independent autopsy sought by Gilbert's family found that Shannan may have been strangled to death.
[3] Gilbert and her other daughters, Sarra and Sherre, frequently appeared on television shows discussing the case.
[4] Her daughter suffered from schizophrenia, with one report claiming that she "had voices in her head telling her to carry out the crime.