The target of the assassins is "Lord Treadstone" and Treadstone is the secret CIA assassination program that created Jason Bourne. The episode title, "The Murdoch Identity" is an allusion to "The Bourne Identity."
The Clifton Suspension Bridge is a real toll bridge, which opened in 1864, spanning the Avon Gorge and the River Avon, linking Clifton in Bristol to Leigh Woods in North Somerset, England. Over the years 127 people have jumped or been thrown from the bridge to their deaths. There was one survivor whose skirt acted as a parachute to break her fall.
This episode takes place in 1897.