Rex and Esther contact the CIA for assistance in infiltrating the Buenos Aires site of the Blessing, at the same time keeping Jack, Gwen, and Oswald's presence in Shanghai a secret.
Director Shapiro agrees to the request and puts his team on the task, including Charlotte, who surreptitiously reports the mission to the Three Families.
Jack, Gwen, and Oswald successfully infiltrate the Shanghai Blessing site and make their way to its exposed face, where they meet the Mother, Jilly Kitzinger, and several armed guards.
After spending some time examining the face of the Blessing, deducing that it generates a morphic field linking the human race, Jack and Gwen question the Mother about the Miracle; she reveals that the Miracle was produced by introducing Jack's immortal blood to the Blessing- causing it to disperse immortality to the whole human race as a 'defence' to a perceived 'attack'-, and furthermore is simply the first part in a larger plan to assert control of the world.
By stopping death and destabilizing the economy, the Families are now poised to take control of the banks, thereby influencing the world governments, eventually leading to a fascist oligarchy which can "decide who lives, how long, where, and why."
Upon arrival in Buenos Aires, Esther helped Rex transfuse almost all of Jack's blood into his body, which he notes only did not kill him because of the Miracle.
The Buenos Aires team moves to leave as well, but before the Cousin can make it out, Rex regains consciousness long enough to grab him and throw him over the edge of the chasm around the Blessing.
Several months later, Jilly Kitzinger, having survived the destruction of the Shanghai facility, meets the Blue-Eyed Man at a familiar park bench.
[citation needed] Very much like the rest of the 10-part series, "The Blood Line" garnered a mixed response from television critics and the Torchwood fan base.
On a positive note, he did also say in regards to the open-ended cliffhanger, ' Torchwood has been very good at burning bridges at the end of its series, with finales that force the show to move to a new place for the following run.
He also criticised the effect of the cliffhanger, saying 'so it turns out that this huge world-changing event was just a "trial run" for an even bigger plan on the part of the bad guys?