When the sales executive of a pharmaceutical company is found dead while on business in Montreal, his wife, Sarah, begins to question everything she thought she knew. As the investigation proceeds, Sarah suddenly finds herself under suspicion and her life under surveillance.

Emer Byrne still suspects that Sarah knows more than she says and becomes convinced that Gumbiner-Fischer is hiding something. Sarah grows even more driven to discover who is responsible for her husband's death.

Emer ignores her superiors and continues investigating Lee's murder. As more pieces of the puzzle are connected, Sarah attempts to blackmail Gumbiner-Fischer to reveal the complete truth.

This is a fresh look from writer Andrew Davies at the classic novel by E.M. Forster, about the impact of Italian sensuality and love of life on an impressionable English girl, framed poignantly by her nostalgic return to Italy after WWI.

Singe and Kate's lives are turned upside down when Kate is diagnosed with an incurable breast cancer. Over her last few days, she creates a list to help Singe, the man she loves, create the best life possible for their sons when she's gone.

Deering and the team have 48 hours to get Dennis to betray his best friend and turn police informant. Dennis won't budge, but when Viv tunnels down to his deepest insecurities, she unleashes more than she could have bargained for.

It's Election Day, and the team is on high alert. When a man is found dead, it seems Beckett's reign of terror is escalating. The team are right on Beckett's tail, however, as a meeting between him and his getaway driver promises to be the key to his capture.

A mayoral debate goes tragically awry when a deadly shooter enters the building. Viv and the team must race to catch the killer and try to understand what motivates his attempted assassination of an underdog mayoral candidate.