They often have an element of the unknown. There are usually secrets or puzzles to be solved. For example, in 'The Da Vinci Code', there are codes and symbols that need to be deciphered.
Another example is 'The Da Vinci Code'. It weaves a tale full of mystery, art history, and adventure as the characters try to solve a complex code that could lead to a great secret.
Sure. 'The Da Vinci Code' by Dan Brown is a great one. It combines mystery and adventure as the protagonist races to solve a series of puzzles related to Leonardo da Vinci's works. Another is 'Sherlock Holmes' series by Arthur Conan Doyle. Holmes' brilliant detective work and the adventures he gets into are really fascinating.
One great book could be 'The Adventures of Tom Sawyer' which is set in Mississippi. It has elements of mystery and adventure as Tom and his friends go through various escapades and encounter strange situations. The characters are vivid and the Mississippi River setting adds a unique charm to the story.
The adventure fiction books from 2015 probably often involve a journey of some sort. It could be a physical journey across a dangerous land like in some epic fantasies, or an emotional and mental journey like in 'The Girl on the Train'. And they tend to have elements of conflict, whether it's between characters, within a society, or against a greater, often mysterious force.
I'm not sure which are the absolute most popular, but 'The Girl in the Spider's Web' was quite well - known. It continued the story of Lisbeth Salander and had a lot of fans of the series eager to read it.
Mystery books are generally fiction. They often involve made - up stories centered around a mystery, like a crime to be solved or a secret to be uncovered. These stories usually feature fictional characters, settings, and plots created by the author's imagination.
I'm not sure about all the books on that list, but 'Red Queen' by Victoria Aveyard might be on it. It has a great adventure element with a world divided by blood - those with red and those with silver. The main character Mare has to navigate this dangerous and complex world, which makes for an exciting adventure.