Pylon – With the Cowley team scattered across Oxfordshire, Endeavour finds himself policing a lonely country patch, and back in uniform. His day job is a monotonous investigation of missing livestock and stolen tractors. But when he discovers the dead body of a missing schoolgirl, it opens this quiet backwater to the roar of Castle Gate CID – now staffed by Thursday and an old adversary, the newly promoted DCI Ronnie Box, alongside sidekick DS Alan Jago.
“We Need to Talk About Charlie Harris” – Charlie struggles with his relationship with the spirit world after being distracted by a ghost at an accident scene; Alex tries to convince a holistic “guru” to have hernia surgery.
…Through Release – In the Season 2 premiere, Neil and Grace face up to their infidelities; and Adriana plots to keep them apart.
Internal Affairs – Sanchez is scrutinized when his mother’s caregiver is murdered. Elsewhere, Jack arrives at Sharon’s condo and acts recklessly, forcing Rusty to take action.
A New Dawn: Part Two – A year has passed and much has changed. With her father dead, Ariadne is queen and finds herself at war with her old adversary, Pasiphae. As the kingdom stands on the brink of collapse, the struggle for power is both bloody and brutal. With the future looking bleak, there is only one person Ariadne dares turn to for help.
The Mole – Capt. Holt and Jake try to find a mole in their precinct before Deputy Chief Madeline Wuntch hears about it. Elsewhere, Terry and Rosa visit a “silent” disco to look for leads for their drug task force.
Family Ties – A string of deaths are traced to toxic cocaine in London.