The Seven Plays of Mystery and Suspense is a collection of plays by Agatha Christie, and while they feature detectives, murders, and intrigue, Dracula is not a character in any of them.
The plays in the collection are:
1. The Mysterious Mr. Quin
2. The Case of the Missing Will
3. The Unexpected Guest
4. Appointment with Death
5. The Mousetrap
6. Witness for the Prosecution
7. Spider's Web
Count Dracula, the famous vampire from Bram Stoker's novel, is a separate fictional character from the world of Agatha Christie's mysteries.