6/6 Time is running out for DI Perez as prime suspect Peter Latimer lies ill in hospital.
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5/6 Perez returns to his childhood home after the murder of a scientist on Fair Isle.
4/6 A second body is found. Detective Inspector Perez wonders if the killings are connected.
3/6 An old acquaintance of DI Perez dies in a suspicious car accident on the island.
2/6 DI Jimmy Perez believes he and his team are finally closing in on the killer.
1/6 Old wounds are painfully reopened for the shocked residents of Ravenswick.