Dallas by Regan Black

Running for her life…
When a typical day at her cafe in Eagle Rock was interrupted by a young woman desperate to escape her captors, Marnie Kemper gladly intervened. She also gladly agreed to testify against the men involved. Now, days before the start of the trial, her security detail is killed and she’s alone, terrified, and unsure who to trust.
A stunning stranger is her only hope.
Dallas Winston’s Army career ended abruptly when he and his K9 partner were shot during a drug bust. Thankfully, the Guardian Agency gave him a second chance at a meaningful career. When he gets the order to rescue a witness and salvage a high-profile case, he follows procedure and rushes in.
Soon it’s clear that standard tactics won’t be enough to keep Marnie alive. Forced to get creative, Dallas must lower his defenses to earn Marnie’s trust as they navigate a deadly web of corruption.