S42·E17 Episode 6454 (Fri 18th Jan 2013)

Cain is worried as the gravity of what they're about to do dawns on him and Charity, but she tells him they'll just have to make sure they don't mess up. Soon afterwards, parked up outside the courier's office, they get the signal to proceed with the plan and Charity makes a phone call as they sit and wait to see the action unfold.