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.

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.

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

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.

Soames and Irene honeymoon in Paris while James is furious after Soames plans to set up a branch of Forsyte & Co. in Paris; Soames, who is horrified by a ballet, returns to London early.

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.

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.

It's Christmas in the Dales; faced with a daunting future, James is desperate to see Helen.

Soames and Irene honeymoon in Paris while James is furious after Soames plans to set up a branch of Forsyte & Co. in Paris; Soames, who is horrified by a ballet, returns to London early.

Murdoch, Watts and Choi investigate the cocaine overdose death of a bookkeeper living in new workers' housing.

Murdoch suspects an overzealous fan after a man dies in an explosion meant for fledgling starlet Ruth Higgins-Newsome.

Cassandra's childhood friend investigates her husband's disappearance and a crime scene at her home; she shares clues as he uncovers secrets and the truth behind their marriage.

Jacko Argyle died in prison having been convicted of murdering his adoptive mother; Dr Arthur Calgary proves that Jacko was actually with him at the time of the murder, proving his innocence.

Miss Marple accompanies Lady Virginia Revel to her home of Chimneys; Count Ludwig is found dead in the arms of Anthony Cade. Why is Cade at Chimneys, and is Virginia's suitor being framed for murder?

Sam fights for his life. Mary puts the house in lockdown, giving Imelda a welcome opportunity. Joe is determined to make his mark on the business. Liza starts a correspondence with Edward.

Murdoch, Watts and Choi investigate the cocaine overdose death of a bookkeeper living in new workers' housing.

Murdoch suspects an overzealous fan after a man dies in an explosion meant for fledgling starlet Ruth Higgins-Newsome.