PBS | 10:00 pm

This political thriller begins its second season in the aftermath of an election, as Prime Minister Robert Sutherland (Robert Carlyle) appoints Joseph Obasi (new cast member Joseph Pepple) as the new Home Secretary, replacing the ousted Archie Glover-Morgan (David Haig). Among the crises facing the COBRA team are the assassination of a Ukrainian oligarch who was leaving a football pitch in a helicopter, and a World War II-era vessel loaded with explosives that threatens the northern Kent coastline. The series continues on Sundays through Aug. 14.