Diesel's Fire. Rebel Dawgs MC, #10

He builds explosive devices with deadly precision. She protects students with fierce determination. Together, they'll eliminate every predator that targets innocent children. When guidance counselor Grace Sullivan discovers three of her students have died in what police call "street racing accidents, " she knows the crashes weren't caused by teenage recklessness. Someone is systematically murdering kids for profit, rigging vehicles to fail during illegal races while wealthy sociopaths place bets on which teenager dies most spectacularly.
But when armed killers corner Grace at the warehouse where evidence is being destroyed, Rebel Dawgs enforcer Diesel intervenes with lethal force and protective fury that transforms her nightmare into salvation. The former military mechanic turned outlaw biker recognizes systematic predation when he sees it, and he'll be damned if he lets anyone hurt the fierce woman who's willing to risk everything to save innocent lives.
But protecting Grace means war with organized child killers, corrupt officials, and a death race operation that has unlimited resources and zero hesitation about eliminating witnesses. As the body count rises and the racing crews close in, Diesel discovers that keeping this warrior woman alive might be easier than keeping his hands off her. And Grace learns that sometimes the most dangerous man is exactly who you need to deliver justice-and the only one worth surrendering to completely.
She thought she wanted legal protection. Now she wants blood.