Rogue lawyer / John Grisham.

Sebastian Rudd is not your typical street lawyer. He works out of a customized bulletproof van, complete with Wi-Fi, a bar, a small fridge, fine leather chairs, a hidden gun compartment, and a heavily armed driver. He has no firm, no partners, no associates, and only one employee, his driver, who's also his bodyguard, law clerk, confidant, and golf caddy. He lives alone in a small but extremely safe penthouse apartment, and his primary piece of furniture is a vintage pool table. He drinks small-batch bourbon and carries a gun. Sebastian defends people other lawyers won't go near: a drug-addled, tattooed kid rumored to be in a satanic cult, who is accused of molesting and murdering two little girls; a vicious crime lord on death row; a homeowner arrested for shooting at a SWAT team that mistakenly invaded his house. Why these clients? Because he believes everyone is entitled to a fair trial, even if he, Sebastian, has to cheat to secure one.