Part 6/9:
Throughout the tumultuous events, Rose craves understanding about the Doctor's origins, yet he remains elusive, sparking confusion and concern. Amidst a backdrop of rising tension, the Doctor receives a shock—the unearthed truth revealing that Cassandra is the mastermind behind the calamity. With financial desperation fueling her actions, she plots a hostage situation, seeking profits from the insurance that would follow Earth's destruction.