Laurie Horn is a character portrayed by Lisa Waltz in the ABC crime series Castle. She was the wife of murdered New York City Councilman Jeff Horn. She arranged the murder with the help of her husband's campaign manager, Frank Nesbit. Laurie came from an extremely wealthy family. After marrying Jeff, she broke into her trust fund to help finance his first campaign. The two, along with Frank Nesbit, wanted to change the world.