Prince Henri returns from war with a new mistress, Filippa, and a baby. Catherine resorts to extreme measures to produce an heir.

Camille's revenge mission leads her back to Valmont as he embarks on his most challenging seduction yet.

A snow blizzard sets in and Miss Marple is forced to take refuge at Sittaford House; when the owner of the house is later found dead in his room, Miss Marple investigates the case.

When a man dies in a drunken brawl at the Starbright Lounge, Murdoch's suspect is another detective.

James is about to embark on a new journey; he wants things in order and Carmody trained up to support Siegfried, but his grand plans are derailed when an injured cat is brought into the practice.

Jolyon insists on fulfilling his parental obligations as James tries to have him expelled from the company, and Soames promises Irene a move to Paris to support her dancing before the two get married.

A snow blizzard sets in and Miss Marple is forced to take refuge at Sittaford House; when the owner of the house is later found dead in his room, Miss Marple investigates the case.

Appointed as Acting Inspector, Murdoch oversees the case of a prominent medical scientist who may have faked his own death.

Murdoch and Crabtree participate in a battlefield re-enactment where one of the pretend soldiers is murdered.

While celebrating a high school reunion, Cassandra's former classmates discover a dead body at a marina; Alberg investigates the resident's identity and the murder while unravelling a mystery.

Helen feels redundant at Skeldale; she returns to Heston Grange when Richard Alderson needs help, but family secrets threaten to tear their relationship apart as Richard refuses to let her muck in.

Jolyon insists on fulfilling his parental obligations as James tries to have him expelled from the company, and Soames promises Irene a move to Paris to support her dancing before the two get married.

Murdoch moves into a rooming house where a quirky fellow tenant insists that the detective helps investigate an apparent murder in the building.

When Crabtree and Effie attend a celebration of Charles Dickens' birth, the host winds up mysteriously dead.

Zoe Strachan is confronted by her estranged brother Benjamin who claims to be in financial trouble; when a dead body that matches Benjamin's description is discovered, Alberg searches for the killer.

Miss Marple revisits the glamorous Bertram's Hotel in the heart of London and realises that the truth behind it is darker than even she had imagined when one of its maids is found murdered.

When medium Harold Sneed hosts a séance, Book and Inspector Bliss are drawn into an investigation of lost souls. Ihe bookshop itself comes under threat from an investigation by Sergeant Morris.

Rob risks everything to save the Miller family from Norman justice; in Westminster, Marian's fragile position at court is shaken to its core by the devastating news of her brother's death.

Murdoch moves into a rooming house where a quirky fellow tenant insists that the detective helps investigate an apparent murder in the building.

When Crabtree and Effie attend a celebration of Charles Dickens' birth, the host winds up mysteriously dead.