Deadly Evidence by Elizabeth Goddard

FBI agent Tori Peterson intends to find her sister's murderer, even if someone's willing to kill her to keep the truth hidden. But that means returning home and working with the lead detective--her ex-boyfriend, Ryan Bradley. Though sparks still fly between them, Tori and Ryan must stay focused on catching a killer...before they are silenced for good.

Standoff at Midnight Mountain by Mary Alford

After her CIA operative brother disappears, leaving behind only a cryptic message, armed men target former agent Rachel Simmons for information. But with help from her ex, Agent Alex Booth, Rachel eludes them, trekking into the mountains in search of her brother. Pursued through the wilderness by highly trained--and very familiar--men, can Alex and Rachel expose a conspiracy that goes deeper than they ever imagined?

USA TODAY Bestselling Author Mary Alford