|Occupation|| Drug dealer|
|Family|| Lennie Briscoe (father)|
Julia Briscoe (sister)
Ken Briscoe (paternal cousin)
Harry (paternal granduncle)
Catherine "Cathy" Briscoe was the younger daughter of Detective Lennie Briscoe. She has a sister named Julia. She was shot twice in the head after testifying against her dealer boyfriend, in return for no charges against her. She was closer to her father than her sister, Julia.