Mysterious books can be referred to as a variety of things depending on the context and genre. Generally, mysterious books can be classified as thrillers, mysteries, or suspense novels. These types of books are characterized by their ability to keep the reader on the edge of their seat as they follow along with the plot.
Thrillers are typically fast-paced and intense, with a focus on action and suspense. They often involve high-stakes scenarios and danger, such as espionage or terrorism. Examples of popular thriller authors include Dan Brown and James Patterson.
Mysteries are novels that revolve around a crime, typically a murder or theft, and the efforts of the protagonist to solve the case. They often involve a whodunit element, where the reader tries to figure out who the culprit is alongside the protagonist. Examples of beloved mystery authors include Agatha Christie and Arthur Conan Doyle.
Suspense novels build tension throughout the narrative and rely on the reader's anticipation of what will happen next to keep them engaged. These books often feature psychological elements and are often described as being "unputdownable." Examples of thrilling suspense authors include Gillian Flynn and Harlan Coben.
Finally, some mysterious books could simply be considered as "enigmatic" or "mystical." These works may deal with supernatural or otherworldly elements, and often leave the reader questioning what is real and what is imagined. Examples of enigmatic authors include Neil Gaiman and Carlos Ruiz Zafón.
In summary, there is a wide variety of terms used to describe mysterious books, depending on the style and content of the work. Regardless of the label, the best ones all share the ability to captivate readers and keep them hooked until the surprising, twist ending.