Death Angel, Sweet Angel is the title of the "fictional" original story adaptation of Police Quest I in the Police Quest Casebook. It is an original story based on the version that appears in the game itself, but takes some of its own direction and liberties with the characters and story (some events do not appear or are glossed over, and additional scenes added, characters names changed or merged with other characters). Some characters from later games are introduced into the events of the first.