Hotel Lockdown (S09E05)

The American president heads to London, ostensibly for his inaugural state visit, but in reality, he is set to lead confidential peace discussions between Israel and Palestine. Beth and Dimitri, posing as undercover agents from the Home Office, need to remain vigilant as they work to keep the delegates separated ahead of the negotiations. When a conspiracy to assassinate the president is revealed, they also find themselves on a mission to locate the would-be attacker. As the hotel goes into lockdown for safety, they must wonder: are they keeping the danger out, or have they trapped it inside?