Nadine Marshall lives with her Uncle Martin and Captain Hugo. She comes home excited with the news of her engagement to John Locke. When she tells her Uncle Martin, he shows her some papers about her family which upset her. When Nadine visits John Locke, she takes some cyanide pills without John noticing. Later that evening Nadine makes her Uncle Martin's nightly hot chocolate and he dies shortly afterward. Nadine is accused of murder when she makes a taped confession that she killed her uncle. (thetvdb.com)