The 1 Lawyer by James Patterson, Nancy Allen

Biloxi’s best criminal defense attorney has never lost a case. Then his client’s beautiful wife is murdered, and America’s #1 lawyer suddenly becomes its #1 suspect. 

Stafford Lee Penney is a small-town lawyer with a big-time reputation for winning every case he tries. In his sharp suits and polished Oxford shoes, Penney is Biloxi, Mississippi’s #1 Lawyer and top local celebrity.
 
Just as Penney notches his latest courtroom victory, his wife is scandalously killed. He spirals into a legal and personal losing streak, damaging his reputation and ruining his career. 
 
That’s when Penney makes a bold decision. He stops trading on his power-lawyer identity and creates a new one: lawyer lifeguard. Moonlighting at the beach, showing up to court in flip-flops, mentoring a law student, the new Penney is at first unrecognizable.