No suggestions for pure fiction thrillers, although author Scott Turow is also an attorney (as is Grisham), and has written novels such as "Presumed Innocent" that have been very popular. I personally don't care for them - Turow gets all into middle-aged white male angst that bogs down the story a lot.
If you're in the mood, check out any of Ann Rule's true-crime books; they are about . . . well, true crime (what was your first clue, A-Jock?!) incidents some of which were high-profile in their areas. My recs for her work:
"The Stranger Beside Me" (a seminal work about serial killer Ted Bundy, whom Rule knew and was friends with);
"Small Sacrifices" (about Diane Downs, who shot her three children killing one so that she could entice her married boyfriend back, and came this close to being acquitted);
"Heart Full Of Lies" (about Lyssa Northon, who killed her husband for who-knows-what reason; THIS one was a page-turner that DH and I did a nightly tug-of-war on);
"Bitter Harvest" (about Dr. Deborah Green, who torched her family's extremely opulent house in Kansas killing two of her three children in an act of Medea-like revenge against her estranged husband);
Rule also has a series of Annals Of Crime books in which other cases are written about more in novella than novel form.
In addition to these, Joe McGinniss's (sp?) book "Fatal Vision" is one of the best of the true-crime-as-novel genre, about Dr. Jeffrey MacDonald, who killed his pregnant wife and two daughters at Fort Bragg in early 1970 and evaded prosecution for almost a decade; he was convicted in 1979 and is still incarcerated - and still maintaining that a Manson-esque group of killers did the murders.
And of course, the book that really put the true-crime-as-novel genre on the map: "In Cold Blood" by Truman Capote.
A-jock