Melissa Chessington Leo is an American actress. She is the recipient of several accolades, including an Academy Award, a Primetime Emmy Award, a Golden Globe Award, a Screen Actors Guild Award, and two Critics' Choice Awards.

Homicide: Life on the Street is an American police drama television series chronicling the work of a fictional version of the Baltimore Police Department's Homicide Unit. Created by Paul Attanasio, it ran for seven seasons and 122 episodes on NBC from January 31, 1993, to May 21, 1999, and was succeeded by Homicide: The Movie (2000), which served as the series finale. The series was created by Paul Attanasio and based on David Simon's book Homicide: A Year on the Killing Streets (1991). Many of the characters and stories used throughout the show were based on events depicted in the book.