Dickens makes this easy for us. He divides the novel into three sections. The first is "Recalled to Life." In it, Dr. Manette is… recalled to life. He’s released from prison and is cared for by his daughter.
Act II is otherwise known as "The Golden Thread." Its title refers to Lucie, who holds the entire family together. She marries Charles Darnay, a French aristocrat. Meanwhile, revolutionary activities are building in France.
In "The Track of a Storm," Charles is captured in France. The family rushes to save him, but in the anarchy of the new Republic any attempts to seek justice fail. Doctor Manette briefly rises to importance in the new regime; his power, however, isn’t enough to save Charles. Finally, Sydney Carton switches places with Charles on the morning of the latter's execution.