I used to read legal thrillers insatiably, mostly from John Grisham and Clifford Irving.
My favourite Grisham thriller must be The Chamber, perhaps because I saw Anthony Hopkins' masterful depiction of Sam Crayhall before I read the novel. This, even though movies normally spoil the novel for me. I prefer reading the novel first, working out the screenplay in my mind, then watching the movie. Also, being a bookworm, I generally enjoy reading the book more than I do watching the movie. Anyway, as squeamish as I am, I enjoyed reading Chamber right down to the chilling, nay nauseating, description of Sam's last moments in the Chamber. Nothing personal against Sam, it's just Grisham's hypnotic style.
Clifford writes about the same subject matter; dirty lawyers, dirty politicians, crazy amounts of money to be made by both, and what not, but he just does not weild the same kind of power as John. I do read them still but somehow the craze has worn itself out.
But there is another John (whose middle name, incidentally, is Clifford) that still has a grip on me. It's John Mortimer, the creator of Horace Rumpole. Never heard of Rumpole? So then you might never have heard of She Who Must Be Obeyed. And you wouldn't have heard of the Mad Bull either. How unlucky for you.
Rumpole is one of those geniuses overlooked by history, perhaps because he does not wear the distinguished, handsome lawyer look (of Grisham fame), and perhaps because he works in the shadow of the Mad Bull (Judge Roger Bullingham) whose intellect is not as formidable as his own. Perhaps Rumpole's less than stellar career is his resistance to the grand ambitions of She Who Must Be Obeyed. I don't know. But following Rumpole as he wins (and loses) various cases is a lot of fun and very educational.
Actually, the only Rumpole book I've read is the The Second Rumpole Omnibus, it has 667 pages of 20 different cases. I imagine that the First is similar in the way it is published. I gather from Amazon that there are other Rumpole books, including Rumpole Misbehaves, Rumpole Rests His Case and there is even a Third Rumpole Omnibus.
John Mortimer writes about Rumpole in the same way that A.C. Doyle writes about Sherlock Holmes. Real dectectives read Conan Doyle and real lawyers read Mortimer for the same reason; they go on a virtual field trip. So while his writing does not fit neatly into the genre of legal thriller, John Mortimer does write about the legal profession, and I do find his writing thrilling.