Solution Squared: Recalculation

For a brief time, they were the CIA's secret weapon - wreaking unexplained havoc on the intelligence agencies of the world. Then, in what proves to be their most intricate operation, Whitney is killed. Courtney stood helpless and watched, as the cargo van her twin sister was in, erupted into a fireball large enough to do structural damage to the buildings around it.

Many are the hazards in the life of a spy, death being ever-present at the top of the list.

Since her sister's 'death', driven b...