Invitation to a Beheading is an excellent novel and, as such, it is difficult. You can't read it in one gulp; it's better to devour it in small doses. Give me just one example of a good book that is easy to read! I don't know such a masterpiece.
We don't know where and when the events related by the omniscient narrator of the novel take place. If we go by the proper names, probably in Russia. Anyway, in a dreamlike country, or rather, in an upside-down world, carnivalesque and abject. The male characters use perfume lavishly, respect exemplary politeness and have a touching care for the good disposition of the victim. The officials are very mannered. For example, in order to spare him an undeserved shock, the Judge whispers the sentence to the accused Cincinnatus C (as prescribed by the Law). He will be beheaded with kindness. He is transported to the fortress and locked in a (relatively) comfortable prison.
The guard - a certain Rodion - greets him with undisguised joy, his face is always "illuminated by kindness". At first, he invites Cincinnatus to a waltz. The prison staff thus experiences a festive moment. The Director greets him with "Welcome!". Cincinnatus receives a cell with walls of a merciless yellow, with a window of a burning ochre, with a light bulb in the ceiling. Austere, but comfortable.
Gradually, the absurd insinuates itself into the narrative. The Director's visit becomes a visit to the Director: the Director Rodrig Ivanovici enters the condemned man's cell and, at the end of the conversation, the prisoner leaves his office. Another time, Cincinnatus C. walks freely through the dungeon, along corridors and stairs, goes out into a small courtyard. And since the password is silence, he passes through several gates without being stopped by anyone. He leaves "the hazy colossus of the fortress" without hesitation and goes into the town, arrives home, climbs the stairs, pushes the door and enters the prison cell again. As if he had come full circle...
Of course, Cincinnatus sits in the cell in a black dressing gown, stained with ash, wears a black skullcap of a philosopher on his head and, when he is not visited by the Director and the guard, he makes notes in his journal. He knows that he has no talent for writing, nor a vocation as a poet, but he was born with "a criminal intuition" in the arrangement of words in sentences. He doesn't insist. In this universe, everything is baseless.
Of course, it's no longer necessary to say: Cincinnatus will die without finding out what he did wrong. We have found, however, a few suggestions. He himself says that he committed a "gnoseological misdemeanor", so he suffers from "cognitive turpitude". He wants to know too much, if I understood correctly. In the end, Cincinnatus is not transparent like other people, he is impermeable to light. His sin is to be different.
It's no longer necessary to say that on the eve of the execution, the notables of the town give a banquet in honour of the condemned man. He sits at the head of the table. Cincinnatus is served by lackey, fiddler Pierre. Is it still worth saying that Vladimir Nabokov's novel is of a demential humour?