What is ezra jennings?

Ezra Jennings is a character in Wilkie Collins' novel, "The Moonstone." He is a highly intelligent and skilled chemist who works as a servant for Lady Verinder. Jennings becomes involved in the mystery surrounding the theft of the Moonstone diamond and helps to solve the case. He is also a laudanum addict, which affects his health and mental stability. Despite this, Jennings is a sympathetic and loyal character who aids the protagonists in their quest for justice.