As the chart-busting series continues for a fourth exciting season, Jane and Maura will investigate a number of complex cases, including a deadly shooting at a community parade and the pending murder trial of Maura’s biological father, Paddy Doyle (John Doman). Plus, Amaury Nolasco (Prison Break) guest stars as the new head of the BPD’s drug unit, who has a conflicted professional past with Jane.