I'm going from memory here, but the main beats of 'Dracula' always stick with you. It opens with Jonathan Harker’s journal from his business trip to Transylvania, which starts polite and gets terrifying when he realizes he’s a prisoner in the Count’s castle. Dracula buys property in England and sails there, with the ship 'Demeter' arriving full of dead crew.
Then the focus shifts to England and the circle of characters around Mina Murray, Harker’s fiancée, and her friend Lucy Westenra. Lucy gets mysteriously ill, sleepwalking and growing pale. Dr. Seward calls his old teacher, Van Helsing, who recognizes the signs of a vampire. They try to save Lucy with garlic and blood transfusions but fail, and she becomes one of the 'bloofer ladies.' The scene where they stake her in her tomb is a classic.
The group then bands together to protect Mina, whom Dracula targets next. The middle part is this great chase, using diaries and phonograph recordings to piece together the Count’s movements. The climax has them pursuing Dracula back to Transylvania, where they finally corner and destroy him just as the sun sets. The whole thing is a race against time, with Mina’s connection to Dracula becoming a liability and a tool. What I always find interesting is how the real horror isn’t just the monster, but the creeping infection of his influence on polite society.