English detective DCI Alan Banks returns in this fourth series of th popular crime drama with three new, original stories. In What Will Survive, DCI Banks struggles to cope with the sudden death of his mother, as he investigates the murder of a young Estonian woman and the disappearance of her drug-dependent sister. In Buried, Banks must navigate difficult emotional territory when the body of an eminent lawyer is washed up in an underground river and he suspects a member of her family.