Crimson Horizon. Texas Heartland Series, #3

Kaitlyn Rivers thought a quiet visit to Cedar Creek, Texas, would be the perfect way to reset after a rocky breakup. But when she witnesses a cold-blooded murder while hiking along the rugged Texas escarpment, her peaceful escape turns into a nightmare. The killer sees her and sets his sights on eliminating the only witness to his crime. Forced into hiding, Kaitlyn finds an unlikely ally in Luke Bennett, a brooding rancher and former undercover operative with his own scars to bear.
Reluctant to trust anyone, Luke steps in to protect Kaitlyn when the local authorities prove ill-equipped to handle the escalating danger. As the killer closes in, Kaitlyn and Luke uncover chilling secrets that tie the murder to a dark web of corruption and greed rooted deep in Cedar Creek's history. The closer they get to the truth, the more perilous their path becomes. Facing their fears and their pasts, Kaitlyn and Luke must rely on each other to survive.
And as sparks fly between them amidst the danger, they begin to realize that love may be the only thing strong enough to mend their broken hearts.