As Lucia struggles to secure these funds, Donnelly is falling in love with her. He tries to allow her more time, he tells her he has declined his 'cut' and that if she can get half the money, he may be able to mollify Nagel. If he could, he says, he would pay the blackmailer off himself. After desperately pawning much of her jewelry, Lucia has only $800. When she meets Donnelly to hand this over, he announces that she is in the clear, a man has been arrested in relation to Darby's murder. Lucia is stricken with guilt because she knows Darby was not actually murdered; she tries to convince Donnelly that she is the killer. He will not accept her story and says that while the man in custody may be innocent of this he is "guilty of a hundred other things" and it does not matter, she needs to think of her family. Later, Donnelly learns that the suspect has been released. When Lucia gets home, her housekeeper says Nagel is waiting in the boathouse. He lets her know the suspect has been "sprung" and that she must pay the full $5,000 immediately. Donnelly arrives and attacks his partner; during the fight, Donnelly is wounded but manages to strangle Nagel to death. Afterwards, Donnelly talks about his warm feelings for Lucia; she says she will call the police and straighten everything out, she cannot allow him to spend the rest of his life wanted for murder. He asks her for a drink and, while she is gone, Donnelly drives away with Nagel in the car. Lucia follows in her vehicle. While driving, Donnelly reaches into Nagel's pocket to retrieve Bea's letters; he loses control, smashes through a fence and into a tree, overturning the car and trapping himself under it. When Lucia finds him, he tells her to not assist him, it will be better if the authorities find him this way. He gives her the letters. At home, as Lucia is trying to compose herself, her two children return from an evening out. Her son talks about "seeing a terrible accident". Bea tells Lucia how the police mentioned that, just before dying, the man pinned beneath the vehicle admitted to killing Darby. Cast James Mason as Martin Donnelly Joan Bennett as Lucia Harper Geraldine Brooks as Bea Harper Henry O'Neill as Tom Harper Shepperd Strudwick as