The beginning of Dracula gave me a sense of it being a epistolary novel because it is mostly through diary entries and letters. This is my favorite types of books because you have to pay attention to perspectives. For example, what is going on in the journal entries and who is writing it, what they feel. In letters you have to think about how the receiver is supposed to feel or what they think the writer feels.
In the book Dracula does all these nice things for Jonathan Harker that Dracula thinks he should be appreciated for. Instead Harker realizes he is a prisoner despite all the good things he has done. A party of Gypsies come to the castle and in an attempt to escape Harker ask the Gypsies to send a letter to Mina. He did this all under the nose of Dracula but soon he had the letter in his hand. Dracula felt disrespected about the letter so he burnt it. Through Harker eyes he was being being forced to stay inside the castle. Dracula was feeding him, giving him a place to sleep and taking care of him. So Dracula had to wonder why he was trying to leave. In his perspective he saw no reason for Harker to try to escape because he taught he had a friendship going on with Harker. Dracula has to now wonder why he would do this to their friendship. In the book, I liked seeing perspectives from both sides it helps give the idea of what the characters are going to do next.