*FINAL*
After three weeks of cliffhangers, the epic drama reaches its conclusion, 100 years to the day of the real-life tragedy. The ship hits the iceberg and panic takes hold.
Proposals and punches
Sunday 8 April
Italian stoker Mario blags a job on the Titanic for his brother Paolo, who is instantly smitten with cabin steward Annie (played by new Doctor Who companion Jenna-Louise Coleman), and as the ship sets
Life or death
Sunday 1 April
The story returns to the beginning, to the Belfast shipyard where political strife interferes with the Titanic's construction, prompting the designer to offer electrical engineer Jim Maloney steerage
Maiden voyage
Sunday 25 March
London, April 1912. Hugh, Earl of Manton uses his government connections to free his daughter Georgiana, who has been arrested in a suffragette demonstration.