Episode four:
The passengers are in a desperate plight as the Titanic sinks into the icy waters. Watson is accidentally locked in the Mantons' cabin searching for her father's book when a steward orders that all first class cabins be locked to prevent people from stealing. However, she is saved when Barnes comes to her aid and gets a steward to open the door. When she is running for a lifeboat, he gives her an envelope and tells her not to open it until she is safe. Peter and Jim go in search of Theresa, Jim's daughter, but when Jim finds her, it is too late to escape. Theresa asks him what they do now, and he replies that they sit there and hold each other tightly. Paolo manages to get Peter to help him free his brother and the other Italians from the cupboard. Lady Manton is finally persuaded to get into a lifeboat. As Batley and his wife try to launch the overturned lifeboat with Lord Manton, Barnes and other passengers and crew, the ship takes its final plunge and waters engulfs the forward superstructure, sweeping them all apart. Barnes drowns. Paolo and Mario jump into the water and are separated; Mario climbs onto an overturned lifeboat, and sees the ship break in half and sink beneath the ocean. Batley floats by, clinging to his wife's body. He is persuaded to let her go and is pulled aboard. Only three people are saved; two of them are Paolo, who died just as he was found, and Lord Manton, who survives. Watson reads the letter Barnes wrote her. It is his will, in which he leaves her a small house, which should be perfect for her father. The series ends with the survivors being approached by the rescue ship, RMS Carpathia.