Christmas, 1861. The March sisters - Meg, Jo, Beth and Amy - prepare for a Christmas without presents or their father.

Geordie is placed on desk duty as Elliot contrives to force him to resign. The next murder case is handed to Larry, who struggles but wisely enlists the help of Miss Scott.

Ridley discovers a shocking connection between the murder case and the arson attack which killed his own family. Ridley finds himself closing in on the truth of what happened on that fateful night.

Leonard is devastated when a halfway house resident is found dead. The man confessed suicidal thoughts to Will, but is this suicide or murder?

When the body of a young woman is found buried in a shallow grave on a bleak Pennine moorland, Carol calls in Ridley to assist with the case. But the victim was not all she seemed to be. Ridley discovers she was leading a secret double life.

At one of Cambridge’s most prestigious colleges, a man is murdered and a valuable painting is stolen, leaving Geordie to determine if the two crimes are linked.

When the body of a young woman is found buried in a shallow grave on a bleak Pennine moorland, Carol calls in Ridley to assist with the case. But the victim was not all she seemed to be. Ridley discovers she was leading a secret double life.

In the aftermath of a fatal accident, Will is devastated to be the cause while Geordie rushes to exonerate his friend.

When the body of a young woman is found buried in a shallow grave on a bleak Pennine moorland, Carol calls in Ridley to assist with the case. But the victim was not all she seemed to be. Ridley discovers she was leading a secret double life.

Trouble is lurking in Grantchester... how will everyone's favorite crime-solving duo fare? Get ready for a dramatic new season.