The death of a schoolgirl brings Endeavour back to Oxford. When he refuses to accept that the main suspect is guilty, Endeavour has to uncover the truth and rescue a victim before it is too late.

John learns who betrayed him, while Daniel, Margaret and Chandrika desperately work to get him released. Tragedy strikes at Beecham House.

When a body is found on Jesus Green, the trail of clues leads Will and Geordie to an oppressive convent, where Will must finally confront his demons. Leonard’s father arrives in Grantchester.

The truth behind Daniel’s relationship with Chanchal comes to light. Castillon arrests John Beecham for stealing a precious diamond owned by the Emperor.

When Will finds two boys near death, he must face up to his part in their tragedy, while unearthed secrets prove to be the hardest test of his faith yet.

Violet witnesses a scandal and tells someone else. John realizes he has no choice but to finally reveal the truth about his past.