Julie London, best known to TV audiences as nurse Dixie McCall on the 1970s hospital drama Emergency!, died Wednesday at age 74. The sultry-voiced actress, who was once married to Dragnet producer-star Jack Webb, was also a singer and had a hit record with the 1950s single "Cry Me a River." London, who had been in declining health since suffering a stroke five years ago, died at a hospital in the Los Angeles suburb of Encino, according to her business manager, Meyer Sack. She was hired on Emergency! by Webb, her then-former spouse, to co-star with her second husband, jazz musician and composer Bobby Troup, who played a doctor on the series. Born Julie Peck to a song-and-dance duo that performed in vaudeville, she started singing on her parents' radio show and started working in movies in the 1940s, after changing her name to London.