Guest Stars Caroline O'Neill as Win Thursday Abigail Thaw as Dorothea Frazil Sara Vickers as Joan Thursday Adam James as Kent Finn Chris Fulton as Dr. Broderick Castle Ruby Thomas as Tessa Knight Gillian Saker as Dr. Pat Amory Robert Luckay as Professor Yuri Gradenko Geff Francis as Grantly Smalls Abram Rooney as Dr. Clifford Gibbs Tristan Sturrock as Dr. Bernard Gould Katherine Kingsley as Mona Davies James Laurenson as Professor George Amory Daniel Attwell as Mick Mitcham Dawn Hope as Adelaide Smalls Natalie Grady as Ruth Hargreaves
