Run and Hide by Maggie Clare

Special Agent Mike Flynn owes his friend a favor, and the instructions are clear. Find Lucia Costa. Keep her safe. But Lucia doesn’t want to be found. She’s investigating her brother’s brutal murder and trying to stay alive.
When the hot FBI agent knocks on her door in the middle of the night, Lucia has to admit, she needs his help. She’s out of money, on the run, and the files hidden in her motel safe could take down a deadly human trafficking ring.
As Mike and Lucia chase down the corrupt cops who betrayed Lucia’s brother, and work the case he died trying to solve, sparks fly. Gruff and jaded, Mike denies his feelings for the feisty grad student under his protection, but Lucia makes him want things he hasn’t in a very long time. With the danger closing in and time running out, Mike will risk everything to give Lucia her life back, and to have a chance at loving her.