Up in Smoke (Crossing the Line #2) - Tessa Bailey

Connor Bannon is supposed to be dead. Dishonorably discharged from the Navy SEALs, he’s spent the last two years working as a street enforcer in Brooklyn for his cousin’s crime ring. Through a twist of fate, he’s now in Chicago, working undercover to bust criminals. But when a cute little arsonist joins the team—all combat boots, tiny jean shorts, and hot-pink hair—Connor’s notorious iron control slips.