Cold Case

Kat: Five rich little Indians. Kat's making a reference to the Agatha Christie murder mystery And Then There Were None, published in 1939. The novel is also known as Ten Little Indians, which is also the name of a nursery rhyme featured in the book. Like in the book, also in this episode a number of people (10 in the novel, 5 in the episode) are stranded together in a secluded place, and one of them is the killer.

John Stillman: Follow the money, see who benefited from Lauren's death. This is a famous line from the film 1976 All The President's Men, starring Dustin Hoffman and Robert Redford as Washington Post reporters Carl Bernstein and Bob Woodward. When Deep Throat meets with Woodward and Bernstein to give them information on the Watergate scandal, he tells them to "just follow the money". The real Deep Throat (Mark Felt of the FBI) never actually said this; it was a moment of artistic license.

Tad: 800,000 dead in 80 days. Tad shows his family photographs of the aftermath of the 1994 Rwandan genocide that was committed by Hutu extremist militias against Tutsis. General Romeo Dallaire was in charge of a United Nations Peacekeeping Force in Rwanda at the time. Before the massacres began, he had warned the UN that ethnic tensions were increasing in the country and that he needed more troops and more funding, but nothing was done. The death toll from the genocide is estimated at 800,000 to 1 million.

Florence Unger This episode is inspired by the case of Florence Unger, a housewife who was found drowned on October 25, 2003 at the Watervale resort in Benzie County, Detroit. Her husband, Mark Unger, was accused of the murder and later, in June 2006, found guilty for pushing his wife from a boathouse roof and then dragging her to a shallow edge of the lake where she drowned. Mrs. Unger had filed for divorce before going on a weekend trip to the resort with her husband and two sons.