Brutus from 'Julius Caesar' is a very notorious betrayer. He was so close to Caesar, seen as a friend, yet he took part in the assassination plot. His actions were driven by his belief that Caesar was becoming too powerful, but his betrayal was still a huge shock. Then there's Iago from 'Othello'. Iago manipulates Othello into believing his wife Desdemona is unfaithful, all out of his own jealousy and spite, which ultimately leads to tragic consequences.
One of the top betrayals in fiction is Judas Iscariot's betrayal of Jesus in religious literature. His kiss in the Garden of Gethsemane led to Jesus' arrest. Another is Brutus' betrayal of Caesar in Shakespeare's 'Julius Caesar'. Brutus, a trusted friend, joined the conspiracy against Caesar, stabbing him. And in 'The Lord of the Rings', Saruman's betrayal of Gandalf. Saruman, once an ally, turned to the dark side, trying to get the One Ring for himself.
One of the best betrayals in fiction is in 'Macbeth'. Lady Macbeth betrays her own moral code and manipulates Macbeth into murdering King Duncan. This act sets off a chain of tragic events that ultimately leads to their downfall.
In 'The Godfather', Carlo Rizzi betrays Sonny Corleone. Carlo, who was married to Sonny's sister Connie, sets Sonny up to be killed in a trap. He does this out of jealousy and resentment towards the Corleone family. Also, in 'Macbeth' by Shakespeare, Lady Macbeth betrays her own moral code. She encourages Macbeth to murder King Duncan so that he can become king, which leads to a downward spiral of guilt and more bloodshed. Then there's the betrayal of Edmond Dantès in 'The Count of Monte Cristo' by Fernand Mondego. Fernand, who was once Dantès' friend, helps send him to prison out of envy and to win Dantès' fiancée.
I'm not sure specifically as I haven't read it. But generally, it might be about various bargains people make and the subsequent betrayals that occur within the context of the story in the '13 to life' world.
Judas Iscariot from the Bible stories (which are also a form of religious fiction in a sense) is very well - known for his betrayal. He betrays Jesus for thirty pieces of silver, which leads to Jesus' crucifixion.
I'm not certain as I haven't read it. But it could potentially be about the complex relationships between characters which might lead to betrayals, and perhaps there's some element of the supernatural or strange happenings related to the 'strange angels' part.
They often create major turning points. For instance, in 'Julius Caesar', Brutus' betrayal of Caesar leads to chaos in Rome. It changes the power dynamics completely and sets off a chain of events that are central to the plot. In 'The Count of Monte Cristo', Fernand's betrayal of Edmond Dantès is what starts Dantès' journey of revenge. Without that betrayal, there would be no story of his elaborate plan to get back at those who wronged him.