Born in Melbourne, but having lived in Sydney for many years, Mary Coustas is one of Australia's best known actors and comedians. In 1987 she became a member of the ground-breaking stage show Wogs out of Work, where her comic creation Effie was born. This was followed by five seasons of the TV sitcom hit Acropolis Now. Her diverse TV, film and stage credits are numerous. In 2003 Mary wrote the self-help book for teenagers, Effie's Guide to Being Upyourself. All I Know is her first book for adults.