Alright, thinking about Michael Peterson's novels, the question about suspense and mystery plots is a bit tricky because he's often grouped with legal thriller authors, but his work tends to lean more into the psychological and moral complexities of the courtroom rather than classic whodunit suspense. I've read 'A Time to Kill' and 'The Testament,' and while there are absolutely elements of mystery—unraveling the truth is central—they're primarily driven by legal procedure and character drama. The suspense comes from the tension of the trial, the ethical dilemmas, not from a traditional puzzle or a race against a hidden antagonist.
To count them, I'd say most of his novels feature a mystery plot in the sense that the 'truth' of the case is contested and revealed through the narrative. But if you're looking for the kind of suspense with detectives, clues, and a tangible threat outside the courtroom, you might find it thinner. 'The Street Lawyer' has more of a thriller plot, but it's suspense born from corporate conspiracy. So, nearly all feature mystery as a core component, but the flavor of suspense is very specific to the legal arena. His later work, like 'The Whistler,' incorporates more external danger, but it's still filtered through that legal lens.
I'd argue that for a pure suspense and mystery reader, they might feel the pacing is different; the payoffs are in verdicts and moral reckonings, not in chases or reveals. So, all of them, technically, but with the caveat that the mechanics of the suspense are deeply intertwined with legal strategy.