If you like sigma force novels, which one should you start with?

The best order to read Sigma Force novels is usually the publication order. That way, you can follow the development of the story and characters as intended by the author.

Another great one from the list might be 'The Doomsday Key'. In this novel, the Sigma Force has to deal with threats related to food sources and ancient secrets. It has a really engaging plot that keeps you on the edge of your seat. There are complex characters and a lot of scientific and historical elements woven into the story, which makes it really interesting.

You could start with 'Early Autumn'. It's a great introduction to the Spencer series. It sets the tone for the character's development and the kind of detective work he does.

You could start with 'Relic'. It's a great introduction to the Pendergast series. It sets the tone with its mystery and unique characters, especially Pendergast himself. The story takes place in a museum, which adds an interesting backdrop to the whole mystery.

You could start with 'The Godwulf Manuscript'. It's the first in the series and gives a great introduction to the character of Spenser. It sets the tone for his tough, yet intelligent and somewhat cynical personality, as well as introducing the world he inhabits, which often involves the seedy underbelly of crime in Boston.

Probably 'Map of Bones'. It has been widely read and has a really exciting story with elements of history and mystery that attract a lot of readers.

I'd recommend starting with 'The Book of the New Sun'. It's a classic of Wolfe's work and gives a great introduction to his complex and imaginative writing style.

You could start with 'Faithful Place'. It delves deep into the character's past and the Dublin setting is vividly portrayed. Tana French's ability to create a sense of place and character is on full display in this novel.

You could start with 'Killing Floor'. It's the first in the Jack Reacher series. It really sets the tone for the character and the type of action - packed, mystery - filled stories that Lee Child is known for.

I would recommend starting with 'The Amber Room'. It's a great introduction to Steve Berry's style of combining historical facts and mystery. The story is full of twists and turns as it follows the search for the fabled Amber Room. It has a great blend of adventure, historical details, and engaging characters that will draw you into Berry's world of novels.