Terzah recommends An Instance of the Fingerpost by Iain Pears

A dark, atmospheric visit to 17th-century Oxford during the Restoration, this book is a fast read--don't let its size intimidate you. Four unreliable narrators guide the story, each shedding light on the others' biases, misinterpretations, and outright lies. Fun and thought-provoking all at once.
Publisher description:
A novel on the way we interpret events to suit our purpose. The protagonists are four people giving evidence in a murder in 17th century England. One blames the crime on too much authority, another on the lack of it. A look at the controversies of the day, from medical experiments to religious freethinking.