However , the meet ends in disaster when Walker detonates a briefcase bomb carried by a double , killing al - Zahrani and three bystanders .
Carrie blackmails al - Zahrani into arranging a meeting with Walker at Farragut Square .
The meet ends in disaster when Walker detonates a briefcase bomb carried by a double , killing al - Zahrani and three bystanders .
Carrie blackmails al - Zahrani into arranging a meeting with Walker at Farragut Square .